MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR JANUARY 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 0 26 05 02 96 -6.5 97 1.4 -7.1 -8.9 -0.5 -0.3 1.6 2.8 3.6 6.0 40 0 0.0 3.5 000000 1041.0 0.0 19.5 0.4
02 1 09 05 02 97 -2.4 97 2.8 -6.5 -8.5 -1.2 -0.9 0.9 2.5 3.2 5.7 40 0 0.0 3.0 000000 1034.5 0.0 15.4 0.2
03 4 09 05 02 97 -1.6 90 3.4 -2.4 -4.0 -2.0 -1.5 0.7 2.3 2.9 5.7 40 0 0.0 5.5 000000 1030.5 0.0 14.5 0.1
04 0 13 09 02 97 -4.0 95 4.8 -4.3 -6.0 -2.5 -2.0 0.4 2.2 2.7 5.4 40 0 1.0 2.5 000000 1030.5 1.7 12.9 0.1
05 8 13 05 20 94 4.8 98 9.2 -4.0 -4.5 -0.2 -0.2 0.7 2.3 2.6 5.2 10 0 0.2 0.0 000000 1036.0 0.5 0.0 0.4
06 9 00 00 45 04 6.4 98 7.7 4.8 4.1 0.5 -0.1 1.1 2.5 2.7 5.1 10 0 0.2 0.0 000001 1038.0 0.6 0.0 0.2
07 8 17 02 02 94 5.0 98 5.8 5.0 4.0 3.4 2.7 2.8 3.2 3.2 5.0 10 0 0.3 0.0 000000 1036.0 1.2 0.0 0.1
08 8 15 02 02 94 4.0 92 4.3 3.1 0.7 3.2 2.7 3.3 3.8 3.6 5.1 10 0 0.0 0.0 000000 1034.0 0.0 0.0 0.6
09 3 16 02 01 94 1.0 96 5.5 0.6 -1.5 2.2 2.2 3.1 3.8 3.7 5.2 10 0 2.4 0.0 000000 1035.0 3.2 0.0 0.3
10 8 17 02 41 09 4.7 97 7.0 1.0 -3.2 3.6 3.2 3.9 4.0 3.9 5.4 10 0 1.4 0.2 000001 1031.5 1.3 0.0 0.2
11 8 00 00 44 05 0.6 99 5.3 0.4 -1.1 3.1 2.9 3.8 4.2 4.2 5.4 10 0 tr 0. 0 0 000001 1030.0 0.0 0.0 0.0
12 9 00 00 45 02 3.4 98 8.6 0.1 -1.1 2.8 2.7 3.5 4.0 4.2 5.5 10 0 0.7 0.2 000001 1031.5 1.2 0.0 0.4
13 8 18 02 02 95 8.6 98 11.1 3.4 0.3 5.8 5.2 5.0 4.6 4.3 5.5 10 0 tr 0.0 000000 1024.5 0.0 0.0 0.2
14 8 28 02 50 96 9.0 96 11.0 8.6 4.4 6.2 6.2 6.2 5.4 4.8 5.6 10 0 2.7 0.3 000000 1025.0 3.6 0.0 0.4
15 8 25 02 02 96 7.2 98 9.5 7.2 5.0 6.5 6.9 6.7 6.0 5.6 5.8 10 0 0.0 1.9 000000 1017.0 0.0 0.0 0.3
16 7 27 02 03 97 0.2 96 9.3 -0.6 -4.4 2.4 2.6 3.4 5.6 5.6 6.0 10 0 0.2 0.1 000000 1023.0 0.5 6.2 0.5
17 7 25 05 02 97 9.3 88 9.3 0.2 5.5 6.1 5.6 6.1 5.5 5.4 6.0 10 0 3.0 0.1 000000 1017.0 2.5 0.0 0.3
18 9 00 00 45 04 0.8 99 8.8 -0.1 -3.8 2.7 2.9 4.6 5.6 5.6 6.2 10 0 1.6 0.6 000000 1022.0 2.8 0.2 0.5
19 0 29 05 02 97 6.0 91 11.0 0.8 1.5 4.3 4.3 5.0 5.6 5.4 6.2 10 0 tr 4.7 000000 1012.5 0.0 0.0 0.9
20 8 22 09 02 97 11.0 79 12.1 6.0 -0.9 6.2 5.5 5.4 5.5 5.4 6.2 10 0 4.9 0.0 000000 1013.0 8.6 0.0 0.3
21 8 18 09 02 97 11.5 89 11.5 10.7 7.8 8.8 8.2 7.7 6.5 5.7 6.3 10 0 0.2 0.0 000000 1011.0 0.4 0.0 1.1
22 8 22 09 02 97 8.5 89 10.8 8.2 4.6 6.4 6.8 7.4 7.0 6.3 6.5 10 0 1.9 5.3 000000 1004.0 2.0 0.0 1.5
23 8 21 13 21 97 8.1 91 11.8 7.4 3.8 7.1 6.8 7.0 7.0 6.6 6.6 10 0 5.2 0.5 000000 994.5 8.5 0.0 1.2
24 8 22 09 60 97 9.6 85 10.3 8.1 6.5 7.9 7.7 8.0 7.4 6.7 6.8 10 0 tr 0.4 000000 993.5 0.0 0.0 0.6
25 8 21 09 60 97 4.2 88 11.5 0.9 -3.0 4.4 4.5 5.7 6.9 6.9 7.0 10 0 7.6 0.0 000000 1019.0 6.5 0.0 1.3
26 8 31 13 60 96 11.2 89 11.6 4.2 2.8 7.9 7.3 7.3 7.0 6.6 7.0 10 0 11.9 0.0 000000 1004.5 8.6 0.0 0.6
27 8 23 02 21 97 8.2 93 13.1 7.6 3.9 7.3 7.2 7.6 7.5 7.0 7.0 10 0 7.3 0.0 000000 1005.5 8.5 0.0 0.6
28 4 30 13 02 97 10.4 71 12.5 8.0 7.0 8.9 8.8 9.0 8.0 7.4 7.3 10 0 1.5 6.2 000000 1011.0 0.3 0.0 1.9
29 0 32 09 02 97 8.7 89 14.1 7.9 3.4 6.6 7.2 7.9 8.0 7.5 7.5 10 0 tr 1.5 000000 1020.0 0.0 0.0 1.0
30 8 23 09 02 97 11.5 88 12.5 8.6 4.1 8.9 8.4 8.4 8.0 7.6 7.6 10 0 2.7 0.0 000000 1014.0 1.7 0.0 0.9
31 0 27 02 02 06 5.5 91 11.1 5.0 -0.1 5.9 6.4 7.9 7.3 7.7 7.7 10 0 4.0 1.2 000000 1016.5 2.8 0.0 1.4
Monthly means
5.3 92 9.0 3.0 0.6 4.3 4.2 4.9 5.2 5.1 6.1 1021.2
Monthly totals
60.9 37.7 67.0 68.7 18.5
Highest values
11.5 14.1 10.7 7.8 8.9 8.8 9.0 8.0 7.7 7.7 11.9 6.2 8.6 19.5 1.9
Lowest values
-6.5 71 1.4 -7.1 -8.9 -2.5 -2.0 0.4 2.2 2.6 5.0
1971-2000 monthly climatological averages
89 7.5 1.6 -0.7 3.5 3.7 4.5 5.1 5.4 6.6 60.4 49.0 1016.1 62.5 91.6 23.4
Number of days with
2002 normal
Snow/sleet falling 0 2.9
50% snow cover 09GMT 0 1.7
Hail or ice pellets 0 0.4
Thunder 0 0.4
Gale 0 0.6
Fog at 09GMT 4 2.6
Air frost 7 10.2
Ground frost 14 17.4
0.2mm precipitation 21 15.5
1.0mm precipitation 15 11.2
5.0mm precipitation 4 4.7
No sunshine 13 13.4
After a cold start, when the ground was frozen to a depth of about 15cm,
January became progressively milder and wetter. No snowfall was observed."
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
2 sky not changing
3 cloud increasing
20 recent drizzle
21 recent rain
41 fog patches
44,45 fog
50 intermittent slight drizzle
60 intermittent slight rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (X1 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR FEBRUARY 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 8 21 13 61 97 12.2 86 13.4 5.0 6.0 7.8 7.3 7.7 7.9 7.7 7.8 10 0 0.2 0.0 000000 1009.5 0.2 0.0 3.1
02 8 20 13 02 97 13.2 74 13.3 11.7 9.1 9.7 9.3 9.0 8.4 7.8 7.8 10 0 1.2 0.0 000000 1011.5 3.5 0.0 1.5
03 8 23 13 60 97 11.0 76 11.0 9.2 6.1 8.4 8.3 8.9 8.8 8.1 8.0 10 0 9.6 0.0 000000 1006.5 10.5 0.0 0.8
04 2 22 05 01 97 5.8 95 12.5 1.3 -0.9 5.1 5.4 7.1 8.3 8.1 8.0 10 0 8.4 0.0 000000 1011.5 7.6 0.0 1.0
05 8 20 09 02 97 10.6 81 13.0 5.8 6.1 8.6 8.4 8.6 8.2 7.8 8.1 10 0 1.7 3.4 000000 998.0 1.4 0.0 1.2
06 0 25 09 02 97 6.8 74 10.1 4.4 1.0 5.6 5.8 7.0 8.0 7.8 8.1 10 0 0.0 6.9 000000 1005.0 0.0 0.0 1.4
07 5 23 05 03 97 2.3 95 11.5 0.3 -3.0 3.4 3.8 5.7 7.4 7.5 8.1 10 0 2.6 0.0 000000 1020.0 2.4 0.0 1.0
08 8 27 02 02 97 10.0 90 13.0 2.3 6.0 6.8 7.2 7.3 7.3 7.2 8.1 10 0 0.3 0.0 000000 1019.5 0.3 0.0 1.3
09 8 31 09 21 97 11.2 71 12.0 9.6 7.3 8.8 8.6 8.7 8.0 7.5 7.9 10 0 2.8 1.7 000000 1007.0 1.1 0.0 1.8
10 0 27 05 02 97 8.0 78 12.6 6.2 2.2 5.7 5.9 7.1 8.0 7.7 8.1 10 0 0.1 1.5 000000 1012.0 0.1 0.0 1.3
11 8 22 05 21 97 12.6 89 13.3 8.0 2.6 9.5 9.0 8.7 8.1 7.7 8.0 10 0 5.9 0.0 000000 1002.5 5.2 0.0 1.2
12 6 36 05 02 97 9.8 88 13.2 9.2 5.5 8.0 8.7 9.1 8.8 8.1 8.1 10 0 0.0 2.0 000000 1012.0 0.0 0.0 1.0
13 8 00 00 02 06 6.7 97 10.0 6.0 1.4 7.3 7.6 8.0 8.8 8.4 8.2 10 0 8.2 1.3 000100 1017.5 1.8 0.0 1.1
14 2 36 05 02 97 4.3 84 9.3 3.1 -1.8 4.6 5.2 6.1 8.2 8.2 8.4 10 0 0.0 8.8 000000 1031.0 0.0 0.0 1.0
15 3 03 02 02 97 1.0 96 9.0 -2.2 -6.0 2.5 3.1 5.3 7.3 7.7 8.4 40 0 0.0 6.7 000000 1036.0 0.0 6.4 1.1
16 0 02 02 02 97 4.1 89 10.1 0.8 -1.5 3.4 3.8 5.4 6.8 7.2 8.2 10 0 0.0 9.2 000000 1034.0 0.0 0.0 1.3
17 9 00 00 43 04 1.1 93 8.3 -1.3 -5.3 3.3 3.4 4.9 6.5 6.9 8.0 10 0 0.7 3.8 000000 1025.5 0.4 7.1 0.6
18 6 24 02 01 96 5.5 90 9.9 1.1 -2.1 3.9 4.4 5.5 6.4 6.6 7.9 10 0 0.0 8.4 000000 1024.5 0.0 0.0 1.7
19 8 25 05 02 97 9.5 74 12.1 5.5 3.5 6.1 5.7 6.1 6.4 6.7 7.8 10 0 9.8 0.6 000000 1021.5 4.5 0.0 1.3
20 6 27 09 02 97 9.4 65 11.6 9.1 5.5 7.4 7.4 7.6 7.2 6.8 7.6 10 0 2.5 5.6 000000 1000.5 1.8 0.0 2.1
21 7 29 02 02 97 2.3 88 11.1 1.6 -2.2 3.3 3.8 5.7 7.1 7.0 7.6 10 0 2.3 0.4 004000 1025.0 2.4 0.0 1.2
22 8 23 09 21 97 11.1 86 14.4 2.3 6.5 7.7 7.2 7.0 6.9 6.8 7.6 10 0 0.2 6.8 000000 1002.0 0.3 0.0 2.3
23 7 30 05 25 97 6.1 73 7.9 4.0 1.5 4.8 4.1 6.3 7.4 7.1 7.6 10 0 0.1 5.7 504000 1005.0 0.1 0.0 1.7
24 8 32 05 02 97 4.0 81 9.8 0.8 -3.5 3.4 3.6 5.0 6.6 6.8 7.6 10 0 12.1 0.0 000000 1015.5 11.4 0.0 0.6
25 8 23 02 02 96 10.3 92 12.3 4.0 1.2 7.2 6.8 6.8 6.6 6.5 7.5 10 0 10.8 0.0 000000 1003.5 13.2 0.0 0.8
26 7 22 19 02 97 9.2 83 12.6 9.2 7.9 8.4 8.3 8.4 7.6 7.0 7.5 20 0 3.7 5.3 000000 992.0 1.1 0.0 1.8
27 1 24 09 02 97 5.2 76 9.6 2.7 -0.5 4.4 4.8 6.4 7.6 7.4 7.6 10 0 0.0 6.1 000000 1000.5 0.0 0.0 1.5
28 0 25 02 02 97 5.1 86 10.7 3.0 -1.7 4.3 4.5 6.0 7.1 7.2 7.7 10 0 0.1 4.9 004000 1000.0 0.1 0.0 1.1
Monthly means
7.4 84 11.3 4.4 1.8 6.1 6.1 7.0 7.6 7.4 7.9 1012.5
Monthly totals
83.3 89.1 69.4 13.5 37.8
Highest values
13.2 14.4 11.7 9.1 9.7 9.3 9.1 8.8 8.4 8.4 12.1 9.2 13.2 7.1 3.1
Lowest values
1.0 65 7.9 -2.2 -6.0 2.5 3.1 4.9 6.4 6.5 7.5
1971-2000 monthly climatological averages
88 8.3 1.6 -1.3 3.4 3.6 4.5 5.0 5.1 6.1 42.8 67.5 1016.8 45.7 95.2 31.1
Number of days with
2002 normal
Snow/sleet falling 1 3.0
50% snow cover 09GMT 0 1.7
Hail or ice pellets 3 0.4
Thunder 1 0.2
Gale 0 0.3
Fog at 09GMT 0 2.4
Air frost 2 9.3
Ground frost 11 17.5
0.2mm precipitation 18 11.4
1.0mm precipitation 14 9.1
5.0mm precipitation 7 3.0
No sunshine 9 9.2
Another mild winter month, with little frost. The warmest February since 1990 and,
before that, as warm as 1961. A very wet month, with frequent rain days, but also a sunny month.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
1 cloud decreasing
2 sky not changing
3 cloud increasing
21 recent rain
25 recent rain shower
43 fog
60 intermittent slight rain
61 continuous slight rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (X5 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR MARCH 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 8 33 05 03 96 1.9 94 8.8 -1.7 -5.1 2.8 3.3 5.2 6.9 7.4 7.7 40 0 0.0 1.3 000000 1010.5 0.0 5.3 1.2
02 2 30 05 02 97 2.8 91 9.2 -0.3 -6.8 2.2 2.6 4.3 6.2 6.9 7.6 10 0 tr 6.9 000000 1019.5 0.0 2.0 1.1
03 8 27 02 02 96 6.2 97 10.0 2.8 -2.2 5.5 5.1 5.8 6.4 6.4 7.5 10 0 0.0 0.2 000000 1020.5 0.0 0.0 0.9
04 8 23 02 02 97 6.9 84 9.2 6.1 3.9 6.4 6.2 6.6 6.8 6.6 7.4 10 0 0.0 0.0 000000 1020.5 0.0 0.0 0.8
05 8 30 02 02 97 7.0 90 13.5 3.5 -0.6 5.5 5.6 6.4 7.0 6.7 7.4 10 0 0.0 4.3 000000 1016.0 0.0 0.0 1.2
06 7 23 05 03 97 9.4 70 12.4 5.1 -0.7 5.8 5.8 6.6 7.0 6.9 7.4 10 0 tr 0.0 000000 1008.0 0.0 0.0 1.4
07 7 25 02 02 97 11.7 83 16.0 9.4 4.4 8.3 7.2 8.0 7.5 7.0 7.4 10 0 0.0 8.0 000000 1017.5 0.0 0.0 2.0
08 8 24 02 02 97 9.8 90 15.2 5.5 0.3 7.3 7.2 7.9 8.0 7.5 7.5 10 0 0.2 2.0 000000 1025.5 0.4 0.0 1.5
09 1 26 05 02 97 6.7 72 11.5 1.6 -2.9 6.3 6.4 7.9 8.4 7.8 7.8 10 0 tr 8.6 000000 1013.0 0.0 0.0 1.8
10 7 22 02 03 97 9.5 73 11.1 0.1 -3.6 5.2 5.1 6.5 7.7 7.7 7.8 10 0 6.2 0.6 000000 1011.5 6.8 0.0 1.6
11 8 23 02 61 96 7.8 93 13.9 7.3 3.5 7.2 7.2 7.6 7.8 7.6 7.9 10 0 1.1 4.6 000000 1010.0 1.7 0.0 0.9
12 8 27 02 60 95 6.1 95 12.1 4.3 1.0 7.2 7.2 8.0 8.1 7.7 7.9 10 0 5.0 1.8 000000 1015.0 9.0 0.0 0.9
13 8 31 02 61 96 5.1 89 7.1 4.7 4.0 6.8 7.1 8.0 8.4 7.7 8.0 10 0 0.2 0.0 000000 1018.0 0.3 0.0 1.8
14 8 03 13 02 97 5.6 67 6.7 4.7 2.3 5.2 5.4 6.6 7.6 7.6 8.0 10 0 5.9 0.0 000000 1013.0 8.7 0.0 1.1
15 8 09 09 02 96 6.7 93 9.8 3.4 2.4 6.3 6.1 6.6 7.1 7.1 8.0 10 0 4.0 0.0 000000 1007.0 3.6 0.0 0.3
16 8 14 05 02 96 9.8 93 15.3 6.7 2.2 7.4 7.2 7.2 7.2 7.1 7.9 10 0 8.3 3.0 000000 1011.0 5.0 0.0 1.0
17 8 27 02 21 96 10.0 95 14.1 8.6 3.2 8.4 8.3 8.4 7.9 7.5 7.9 20 0 2.7 3.5 000000 1006.0 2.2 0.0 1.0
18 8 22 09 02 97 8.8 92 11.1 8.0 3.3 8.3 8.2 8.7 8.5 8.0 7.9 10 0 9.2 0.1 000000 994.0 5.4 0.0 1.0
19 7 21 02 02 97 8.8 90 12.3 7.0 4.1 7.5 7.4 8.2 8.4 8.1 8.1 10 0 3.8 0.9 000000 1003.5 6.1 0.0 0.9
20 7 18 02 02 97 10.9 87 13.2 7.2 4.6 8.9 8.8 9.2 8.9 8.2 8.1 10 0 3.2 0.0 000000 1014.0 5.0 0.0 0.6
21 8 22 02 02 97 11.9 85 15.9 9.8 7.5 9.7 9.6 10.0 9.3 8.5 8.2 10 0 0.0 2.8 000000 1018.0 0.0 0.0 1.2
22 8 20 02 03 97 10.6 88 16.1 8.4 3.3 8.9 8.9 9.5 9.5 8.8 8.4 10 0 0.0 1.9 000000 1025.5 0.0 0.0 1.4
23 8 09 05 02 97 8.3 80 13.5 7.7 3.8 9.3 9.4 10.0 9.8 9.0 8.5 10 0 0.0 5.4 000000 1032.5 0.0 0.0 1.9
24 1 21 02 02 97 8.7 68 12.5 2.8 -1.0 7.2 7.3 8.8 9.6 9.1 8.8 10 0 0.0 4.6 000000 1034.0 0.0 0.0 1.8
25 7 15 02 03 94 6.9 82 15.3 2.7 -0.7 7.3 7.4 8.8 9.4 9.1 8.9 10 0 0.0 6.1 000000 1029.5 0.0 0.0 2.5
26 3 22 05 02 97 8.1 69 12.1 6.5 4.4 8.2 8.2 9.6 9.8 9.1 9.0 10 0 0.0 8.6 000000 1031.0 0.0 0.0 1.7
27 0 03 02 02 97 7.2 78 13.2 -0.1 -2.1 5.7 6.2 8.2 9.4 9.2 9.0 10 0 0.0 11.0 000000 1033.5 0.0 0.3 1.5
28 0 09 02 46 07 6.6 74 15.1 1.4 -1.4 6.1 6.3 8.1 9.3 9.1 9.0 10 0 0.0 10.4 000000 1028.5 0.0 0.0 2.7
29 1 36 02 02 96 9.8 76 17.5 2.7 -0.7 6.8 6.6 8.0 9.1 9.0 9.0 10 0 0.0 11.4 000000 1022.5 0.0 0.0 1.9
30 3 22 02 03 97 8.9 73 18.3 2.0 -0.6 7.7 7.2 8.4 9.3 9.0 9.0 10 0 tr 9.7 000000 1020.5 0.0 0.0 2.3
31 8 18 02 02 06 10.9 93 13.0 6.4 3.4 9.6 8.3 9.2 9.6 9.2 9.0 10 0 tr 0.1 000000 1015.5 0.0 0.0 0.9
Monthly means
8.0 84 12.7 4.7 1.1 6.9 6.9 7.8 8.3 8.0 8.1 1017.6
Monthly totals
49.8 117.8 54.2 7.6 42.8
Highest values
11.9 18.3 9.8 7.5 9.7 9.6 10.0 9.8 9.2 9.0 9.2 11.4 9.0 5.3 2.7
Lowest values
1.9 67 6.7 -1.7 -6.8 2.2 2.6 4.3 6.2 6.4 7.4
1971-2000 monthly climatological averages
84 11.2 3.3 0.5 5.2 5.5 6.4 6.6 6.5 6.7 48.5 102.9 1015.5 47.5 24.2 44.2
Number of days with
2002 normal
Snow/sleet falling 0 2.0
50% snow cover 09GMT 0 0.2
Hail or ice pellets 0 1.0
Thunder 0 0.5
Gale 0 0.4
Fog at 09GMT 0 0.9
Air frost 3 5.4
Ground frost 13 14.7
0.2mm precipitation 12 14.6
1.0mm precipitation 10 10.1
5.0mm precipitation 5 2.5
No sunshine 6 6.7
A warm and sunny month, although the sunshine total was mainly a result of sunny days
during the 23rd - 30th. No snow, thunder or hail recorded.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
1 cloud decreasing
2 sky not changing
3 cloud increasing
21 recent rain
46 fog
60 intermittent slight rain
61 continuous slight rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (X1 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR APRIL 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 7 18 05 02 97 12.5 77 15.9 9.3 5.1 9.6 9.3 9.9 9.7 9.2 9.1 00 0 0.0 4.1 000000 1015.0 0.0 0.0 1.9
02 6 20 02 02 96 11.5 82 19.3 8.7 6.6 9.6 9.6 10.2 10.0 9.5 9.1 00 0 0.0 2.0 000000 1012.5 0.0 0.0 2.9
03 7 18 02 02 96 15.1 58 21.4 9.0 5.8 9.9 10.0 10.8 10.5 9.6 9.2 00 0 0.0 9.5 000000 1006.5 0.0 0.0 3.2
04 0 32 02 02 94 12.5 75 18.8 6.5 2.5 9.5 9.2 10.7 10.7 10.0 9.4 00 0 0.0 11.0 000000 1011.0 0.0 0.0 2.6
05 7 36 05 03 96 9.5 78 18.3 6.2 1.8 9.0 8.6 10.6 10.7 10.2 9.5 00 0 0.0 9.0 000000 1008.5 0.0 0.0 3.4
06 0 04 09 02 97 9.0 51 12.8 6.3 4.0 8.0 8.4 10.1 10.7 10.3 9.7 00 0 0.0 12.0 000000 1017.5 0.0 0.0 4.4
07 1 04 05 02 97 8.5 68 13.9 4.1 1.6 6.8 7.6 9.1 10.2 9.9 9.7 00 0 0.0 11.5 000000 1024.5 0.0 0.0 3.1
08 0 04 05 02 97 9.4 75 14.0 3.1 -1.6 6.5 7.2 9.1 10.0 9.9 9.8 00 0 0.0 9.5 000000 1024.0 0.0 0.0 2.1
09 0 04 02 02 97 7.8 76 10.4 1.2 -1.6 6.1 7.1 8.9 9.9 9.7 9.8 90 0 0.0 2.5 000000 1026.0 0.0 0.0 1.9
10 0 09 09 02 97 9.4 58 13.4 5.0 -0.4 6.6 7.1 8.6 9.4 9.4 9.6 90 0 0.0 11.5 000000 1022.0 0.0 0.0 2.7
11 2 36 09 02 97 9.2 65 12.7 4.0 1.4 6.4 7.0 8.7 9.4 9.1 9.6 90 0 0.0 6.1 000000 1013.5 0.0 0.0 3.2
12 0 36 09 02 97 9.0 60 13.5 2.4 -0.5 6.1 6.9 8.6 9.4 9.2 9.5 90 0 0.0 8.9 000000 1010.5 0.0 0.0 3.1
13 1 36 05 02 97 6.8 81 10.3 2.5 0.5 6.3 6.8 8.6 9.3 9.2 9.5 90 0 tr 3.5 004000 1013.0 0.0 0.0 1.8
14 6 33 02 02 97 10.1 61 13.7 0.0 -3.0 6.6 6.4 7.9 9.0 9.1 9.4 90 0 0.0 3.9 000000 1014.0 0.0 0.0 1.4
15 7 36 02 02 97 9.0 75 14.5 6.3 3.0 8.0 8.2 9.1 9.2 9.1 9.4 90 0 0.0 1.4 000000 1017.0 0.0 0.0 1.4
16 2 21 02 02 96 11.6 62 16.9 0.4 -2.2 5.8 6.4 x 9.1 9.2 9.4 90 0 0.0 11.3 000000 1018.0 0.0 0.0 1.2
17 1 19 02 02 97 12.2 62 16.7 2.7 -1.2 6.6 6.7 x 9.6 9.4 9.4 90 0 0.6 6.2 000100 1016.5 1.8 0.0 2.2
18 1 30 02 02 97 11.4 67 15.6 3.2 -0.5 7.2 7.3 x 10.0 9.6 9.5 10 0 1.0 7.6 000000 1016.5 0.3 0.0 2.1
19 5 27 02 02 97 11.8 77 15.1 4.3 0.3 7.4 7.4 x 9.9 9.6 9.5 10 0 0.0 3.7 000000 1021.0 0.0 0.0 1.4
20 7 21 02 03 96 11.5 71 17.1 2.1 0.2 7.7 7.6 x 9.9 9.7 9.5 90 0 0.0 2.0 000000 1029.5 0.0 0.0 1.8
21 7 15 02 02 97 14.9 63 20.0 6.2 3.5 10.0 9.5 x 10.0 9.8 9.5 90 0 0.0 9.6 000000 1033.5 0.0 0.0 1.6
22 7 17 02 02 97 16.2 53 20.5 5.8 3.1 9.2 9.5 x 10.9 10.2 9.6 90 0 0.0 5.1 000000 1030.5 0.0 0.0 2.7
23 0 18 02 02 96 16.2 74 22.8 8.2 5.4 10.1 10.5 x 11.5 10.7 9.8 90 0 tr 12.3 000000 1032.5 0.0 0.0 2.1
24 8 18 02 20 94 12.3 92 22.3 10.4 7.7 12.2 12.2 x 12.2 11.3 10.0 90 0 tr 8.1 000000 1029.5 0.0 0.0 2.1
25 5 00 00 03 97 14.9 60 18.9 9.1 6.5 11.3 11.6 x 12.2 11.6 10.2 90 0 4.5 10.3 000000 1024.5 3.0 0.0 2.6
26 8 22 09 61 97 9.0 93 15.3 8.1 6.7 11.1 11.4 x 12.4 11.6 10.5 10 0 3.4 2.9 000000 1005.0 1.6 0.0 1.2
27 1 31 09 02 97 11.2 74 15.1 5.0 1.9 8.1 8.5 x 11.5 11.3 10.6 10 0 9.1 7.5 000000 1012.0 6.2 0.0 2.0
28 8 24 13 25 97 13.0 71 15.3 8.7 7.1 11.0 10.8 x 11.5 11.1 10.6 10 0 1.8 5.4 000000 996.0 1.0 0.0 2.0
29 6 27 13 02 97 11.9 65 14.9 5.2 3.1 8.3 8.6 x 11.3 11.0 10.6 10 0 5.8 9.0 000000 997.5 6.2 0.0 1.9
30 8 23 09 61 96 11.0 93 11.0 8.4 5.1 9.9 9.7 x 10.9 10.7 10.6 10 0 11.0 0.0 000000 998.5 5.8 0.0 2.4
Monthly means
11.3 71 16.0 5.4 2.4 8.4 8.6 x 10.4 10.0 9.7 1016.6
Monthly totals
37.2 207.4 25.9 0.0 68.4
Highest values
16.2 22.8 10.4 7.7 12.2 12.2 x 12.4 11.6 10.6 11.0 12.3 6.2 0.0 4.4
Lowest values
6.8 51 10.3 0.0 -3.0 5.8 6.4 x 9.0 9.1 9.1
1971-2000 monthly climatological averages
77 13.7 4.9 2.0 7.5 7.9 8.6 9.0 8.5 8.3 47.2 143.1 1015.4 50.4 6.6 44.2
Number of days with
2002 normal
Snow/sleet falling 0 1.0
50% snow cover 09GMT 0 0.0
Hail or ice pellets 1 1.0
Thunder 1 0.8
Gale 0 0.0
Fog at 09GMT 0 0.1
Air frost 0 1.0
Ground frost 8 9.0
0.2mm precipitation 8 12.8
1.0mm precipitation 7 9.5
5.0mm precipitation 3 3.2
No sunshine 1 3.1
A sunny month (sunniest April since 1990), with mean daytime temperatures the highest
in 50 years (equal to 1987). No measurable rain 21 March - 20 April.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
2 sky not changing
3 cloud increasing
20 recent drizzle
25 recent rain shower
61 continuous slight rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (X1 slight snow, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR MAY 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 1 29 05 02 97 12.4 58 15.6 6.0 3.4 7.8 8.2 x 10.7 10.4 10.5 10 0 0.0 10.9 000000 1002.5 0.0 0.0 1.8
02 6 27 02 02 97 12.5 68 16.5 2.5 0.4 7.4 8.1 x 11.0 10.6 10.5 10 0 0.0 8.5 000000 1008.5 0.0 0.0 1.9
03 0 31 02 02 97 11.1 70 15.2 5.6 2.2 8.2 8.7 x 11.2 10.7 10.5 10 0 0.1 9.8 000000 1018.0 0.1 0.0 1.9
04 7 04 05 02 97 10.0 68 13.8 4.8 2.2 8.8 9.1 x 11.3 10.9 10.5 10 0 0.0 6.7 000000 1023.0 0.0 0.0 1.7
05 6 33 09 02 97 11.1 53 12.8 3.9 0.8 8.1 8.3 x 11.0 10.8 10.6 00 0 1.4 5.1 000000 1025.5 2.8 0.0 2.6
06 8 36 02 21 96 10.4 85 15.7 6.8 6.4 9.7 9.6 x 10.7 10.6 10.6 10 0 5.4 2.1 000000 1022.5 3.0 0.0 1.2
07 8 04 02 50 95 10.1 97 15.7 9.1 5.5 10.4 10.4 x 11.0 10.6 10.6 10 0 0.1 2.7 000000 1021.5 0.1 0.0 0.8
08 2 01 02 02 96 9.5 85 16.6 7.6 4.1 9.6 9.2 x 11.1 10.7 10.6 10 0 0.0 7.4 000000 1020.5 0.0 0.0 1.4
09 8 03 09 02 97 10.6 82 12.9 9.3 7.2 10.3 10.3 x 11.3 10.7 10.6 10 0 tr 0.0 000000 1014.5 0.0 0.0 0.8
10 8 32 02 05 95 12.9 84 16.5 10.6 9.9 11.6 11.5 x 11.5 10.7 10.6 10 0 0.0 0.0 000000 1009.5 0.0 0.0 1.4
11 7 31 02 05 96 14.3 74 19.0 11.2 8.6 11.7 11.7 x 11.8 11.0 10.6 10 0 0.0 7.0 000000 1011.0 0.0 0.0 2.5
12 8 00 00 02 96 12.2 72 17.6 7.2 5.9 11.1 11.1 x 12.2 11.5 10.8 10 0 1.0 5.1 000000 1014.0 1.6 0.0 1.9
13 8 21 09 02 97 13.2 81 14.9 10.1 7.6 11.9 11.9 x 12.4 11.6 10.9 10 0 10.9 0.0 000000 1008.5 9.1 0.0 0.5
14 7 28 13 02 97 14.9 65 17.0 10.7 9.4 11.8 11.7 x 12.1 11.6 11.0 10 0 0.3 7.7 000000 1010.0 0.2 0.0 2.4
15 7 23 09 02 97 16.0 69 20.2 10.5 9.0 12.6 12.4 x 12.6 11.8 11.1 10 0 0.0 11.1 000000 1023.0 0.0 0.0 2.4
16 1 16 02 02 97 18.9 62 25.9 7.1 5.7 11.4 11.7 x 13.1 12.3 11.2 10 0 0.0 12.1 000000 1020.5 0.0 0.0 4.6
17 8 09 09 02 97 21.5 56 23.5 15.0 11.6 14.5 14.4 14.7 15.1 12.8 11.4 10 0 1.6 4.2 000000 1010.5 0.8 0.0 3.1
18 8 15 05 02 96 13.5 92 18.9 13.5 13.5 14.8 14.9 15.1 14.4 13.2 11.6 10 0 1.9 2.7 000000 1011.0 1.0 0.0 1.6
19 7 22 02 02 97 17.0 74 20.1 11.3 9.2 14.0 13.9 14.3 14.1 13.2 11.9 10 0 0.0 7.3 000000 1017.0 0.0 0.0 2.8
20 8 14 05 02 97 16.0 66 18.2 13.0 10.9 14.9 14.9 15.2 14.9 13.6 12.1 10 0 6.3 0.6 000000 1011.0 1.3 0.0 1.4
21 7 18 05 02 97 15.8 72 17.8 12.4 10.6 14.5 14.4 15.0 14.8 13.7 12.3 10 0 6.4 5.2 000000 1001.0 5.4 0.0 1.8
22 7 20 13 02 97 15.9 64 16.8 12.9 11.3 14.4 14.5 15.0 14.9 13.8 12.4 10 0 5.2 6.7 000000 994.5 1.8 0.0 2.0
23 7 18 09 02 97 14.3 68 18.8 11.1 9.9 13.8 13.8 14.4 14.8 13.9 12.6 10 0 5.6 9.6 000000 1004.5 5.1 0.0 2.4
24 8 18 13 63 95 13.7 91 17.3 10.6 9.4 13.0 13.6 14.4 15.0 14.0 12.7 10 0 1.4 6.0 000000 1000.0 0.4 0.0 2.1
25 6 22 09 02 97 14.0 64 17.2 9.4 6.9 12.3 12.5 13.6 14.4 13.7 12.8 10 0 12.2 9.5 000000 1008.0 5.7 0.0 2.3
26 8 14 09 02 97 10.4 87 13.0 9.0 8.7 12.7 12.7 13.4 14.3 13.7 12.7 10 0 9.8 2.9 005100 997.0 2.2 0.0 0.6
27 4 18 02 02 97 13.0 69 17.7 3.7 2.1 9.9 10.6 12.4 13.6 13.4 12.9 10 0 0.4 10.4 000000 1003.0 0.4 0.0 1.7
28 8 16 05 02 97 13.5 77 15.1 7.9 5.8 12.7 12.8 13.6 14.0 13.5 12.8 10 0 0.6 1.7 000000 1004.5 0.8 0.0 1.6
29 8 23 05 02 97 13.8 59 16.9 10.0 7.4 12.7 12.7 13.2 13.8 13.2 12.7 10 0 0.0 8.5 000000 1011.5 0.0 0.0 2.0
30 7 21 02 02 97 14.3 67 17.6 9.6 6.5 12.4 12.5 13.3 13.9 13.3 12.7 10 0 3.3 5.1 000000 1020.5 1.4 0.0 1.2
31 1 23 02 02 06 17.6 57 20.2 7.4 4.4 11.6 11.9 13.3 14.0 13.3 12.7 10 0 0.0 12.5 000000 1026.0 0.0 0.0 1.8
Monthly means
13.7 72 17.3 9.0 7.0 11.6 11.7 12.9 12.2 11.5 1012.0
Monthly totals
73.9 189.1 43.2 0.0 58.2
Highest values
21.5 25.9 15.0 13.5 14.9 14.9 15.2 15.1 14.0 12.9 12.2 12.5 9.1 0.0 4.6
Lowest values
9.5 53 12.8 2.5 0.4 7.4 8.1 10.7 10.4 10.5
1971-2000 monthly climatological averages
73 17.4 8.0 5.6 11.0 11.2 12.4 12.4 11.5 10.5 50.9 187.6 1015.9 37.2 0.1 69.1
Number of days with
2002 normal
Snow/sleet falling 0 0.1
50% snow cover 09GMT 0 0.0
Hail or ice pellets 1 0.5
Thunder 1 1.9
Gale 0 0.0
Fog at 09GMT 0 0.0
Air frost 0 0.1
Ground frost 0 2.2
0.2mm precipitation 17 12.2
1.0mm precipitation 14 8.8
5.0mm precipitation 8 2.9
No sunshine 3 2.8
A frequently cool and dull month, although night-time temperatures
were above average and there was no frost. Unsettled between the 21st and 28th.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
2 sky not changing
3 cloud increasing
5 haze
21 recent rain
50 intermittent slight drizzle
63 continuous moderate rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR June 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 0 18 05 02 97 18.7 55 23.1 8.0 5.9 12.8 12.9 14.0 14.3 13.5 12.7 10 0 0.0 13.4 000000 1025.5 0.0 0.0 3.6
02 2 16 05 02 97 20.9 55 26.2 10.5 6.4 14.0 13.9 14.7 15.0 14.0 12.9 10 0 0.2 10.4 000100 1017.5 0.2 0.0 3.3
03 8 21 05 02 97 15.4 66 16.9 13.3 11.7 15.9 16.0 16.4 15.7 14.3 13.0 10 0 0.3 2.7 000000 1009.5 0.2 0.0 1.4
04 8 18 02 02 97 13.0 75 16.6 9.1 7.2 14.2 13.9 14.8 15.1 14.4 13.1 10 0 tr 2.1 000000 1006.5 0.0 0.0 1.9
05 7 20 09 02 97 13.2 74 15.9 10.7 9.3 13.8 13.9 15.0 15.1 14.3 13.3 10 0 23.6 0.0 000000 999.5 10.8 0.0 0.5
06 8 32 02 02 96 15.9 95 17.8 12.1 11.7 14.3 14.1 14.3 14.5 14.1 13.3 10 0 1.0 0.1 000000 1000.0 1.0 0.0 0.5
07 8 18 02 02 95 14.5 93 15.5 14.5 14.3 15.3 15.3 15.2 14.8 14.0 13.4 10 0 1.0 0.0 000000 1002.0 1.5 0.0 0.5
08 7 14 05 03 97 15.5 80 17.7 12.1 10.9 14.3 14.0 14.3 14.4 13.9 13.3 10 0 tr 2.3 000000 1005.0 0.0 0.0 1.1
09 8 22 09 50 97 13.2 84 15.1 12.2 9.4 14.6 14.4 14.5 14.5 14.0 13.3 10 0 3.4 3.2 000000 1005.5 3.6 0.0 1.1
10 6 23 09 02 97 15.1 65 17.1 10.6 8.4 12.8 12.9 13.9 14.1 13.8 13.4 10 0 3.6 5.5 000000 1007.0 1.1 0.0 1.5
11 1 18 05 03 97 15.3 61 18.3 8.1 5.4 12.2 12.7 13.9 14.4 13.9 13.3 10 0 4.8 8.0 000000 1013.0 7.3 0.0 1.9
12 8 33 02 02 97 15.3 85 17.7 11.4 11.1 14.4 14.4 14.8 14.8 14.0 13.4 10 0 1.2 1.0 000000 1013.0 4.1 0.0 1.4
13 8 27 02 21 96 15.3 92 20.2 11.2 11.2 14.3 14.4 15.0 15.0 14.2 13.4 10 0 tr 2.1 000000 1014.0 0.0 0.0 1.5
14 8 18 02 02 97 20.2 78 21.7 15.1 13.6 15.9 15.8 15.9 15.5 14.5 13.4 10 0 0.2 0.9 000000 1013.5 0.3 0.0 1.5
15 7 20 05 02 97 17.6 70 21.0 12.8 11.1 15.6 15.6 16.0 15.8 14.7 13.5 10 0 0.3 5.7 000000 1014.0 0.4 0.0 2.2
16 8 23 09 02 97 16.2 92 22.5 14.7 13.6 16.6 16.4 16.4 16.1 15.1 13.7 10 0 0.0 0.6 000000 1015.0 0.0 0.0 1.0
17 0 14 02 02 97 22.5 67 25.1 13.5 11.8 15.6 15.8 16.4 16.2 15.1 13.9 10 0 0.6 10.5 000000 1013.5 0.2 0.0 2.0
18 8 22 05 02 97 17.1 77 22.7 15.6 14.6 17.8 18.0 18.0 17.5 15.9 14.0 10 0 0.0 9.5 000000 1015.0 0.0 0.0 2.4
19 2 21 02 02 97 18.7 57 21.8 9.7 8.6 14.9 15.6 17.0 17.5 16.3 14.3 10 0 0.0 12.3 000000 1022.5 0.0 0.0 2.5
20 8 04 02 02 97 14.2 77 23.1 12.1 11.0 15.9 16.5 17.4 17.5 16.5 14.5 00 0 1.2 6.5 000000 1020.0 1.4 0.0 3.3
21 8 18 05 02 97 15.5 75 21.8 12.3 11.0 15.9 16.4 17.4 17.5 16.5 14.7 00 0 2.4 4.5 000000 1020.0 3.2 0.0 1.3
22 7 18 02 02 97 17.7 71 19.1 13.9 13.9 17.3 17.3 17.5 17.5 16.5 14.8 00 0 tr 2.1 000000 1017.5 0.0 0.0 2.0
23 4 22 09 02 97 17.7 55 20.8 9.8 7.4 16.3 15.6 16.1 16.9 16.3 14.9 00 0 0.0 8.0 000000 1020.5 0.0 0.0 2.2
24 0 22 02 02 97 18.9 68 22.9 8.3 6.8 13.8 14.5 16.4 17.0 16.4 15.0 00 0 0.0 13.1 000000 1025.5 0.0 0.0 2.9
25 0 27 02 02 97 18.2 71 20.2 9.2 7.6 14.4 15.0 16.6 17.3 16.6 15.0 00 0 0.0 8.2 000000 1027.0 0.0 0.0 2.0
26 0 25 05 02 97 18.7 69 24.7 9.3 7.5 14.3 14.9 16.5 17.0 16.6 15.1 00 0 0.0 14.4 000000 1023.0 0.0 0.0 3.6
27 7 32 09 03 97 15.6 62 18.8 11.5 9.4 15.6 16.2 17.5 18.0 17.0 15.1 00 0 0.0 7.4 000000 1019.0 0.0 0.0 2.6
28 7 36 09 02 97 16.3 73 18.8 8.7 6.6 13.3 13.9 16.0 17.0 16.8 15.2 90 0 0.0 5.0 000000 1021.5 0.0 0.0 2.8
29 7 31 02 02 97 17.0 77 19.5 7.5 5.3 14.4 14.3 15.6 16.5 16.5 15.3 90 0 0.0 8.0 000000 1022.5 0.0 0.0 2.1
30 8 27 05 02 97 16.5 79 20.5 10.1 7.6 14.0 14.4 16.0 16.5 16.5 15.2 90 0 1.3 1.5 000000 1017.0 4.8 0.0 2.3
Monthly means
16.7 73 20.1 11.3 9.7 14.8 15.0 15.8 16.0 15.2 14.0 1014.8
Monthly totals
45.1 169.0 40.1 0.0 58.9
Highest values
22.5 26.2 15.6 14.6 17.8 18.0 18.0 18.0 17.0 15.3 23.6 14.4 10.8 0.0 3.6
Lowest values
13.0 55 15.1 7.5 5.3 12.2 12.7 13.9 14.1 13.5 12.7
1971-2000 monthly climatological averages
74 20.0 10.9 8.9 14.3 14.6 15.6 15.3 14.4 12.9 52.0 180.0 1016.8 36.4 0.0 72.4
Number of days with
2002 normal
Snow/sleet falling 0 0.0
50% snow cover 09GMT 0 0.0
Hail or ice pellets 0 0.1
Thunder 1 2.0
Gale 0 0.0
Fog at 09GMT 0 0.1
Air frost 0 0.1
Ground frost 0 2.2
0.2mm precipitation 15 11.5
1.0mm precipitation 10 8.9
5.0mm precipitation 1 3.5
No sunshine 2 2.3
While mean temperatures were close to average, there were few very warm days.
Although rainfall was below average, around half of the total fell in a single
day and there were several more rain days than usual.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
2 sky not changing 50 intermittent light drizzle
3 cloud increasing
21 recent rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR July 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 8 22 02 50 95 16.5 84 16.8 12.0 11.2 16.2 15.7 16.3 16.6 16.3 15.1 10 0 2.1 1.6 000000 1001.0 0.5 0.0 1.8
02 7 23 05 02 97 14.9 65 18.9 7.4 7.2 13.7 14.1 15.3 16.2 16.1 15.1 10 0 15.0 2.4 000000 1000.0 11.4 0.0 1.1
03 8 18 05 61 96 12.4 93 17.9 11.3 11.2 14.8 14.9 15.4 16.0 15.8 15.1 10 0 1.1 3.4 000000 994.5 0.4 0.0 1.6
04 0 31 05 02 97 17.6 48 20.1 9.7 7.1 12.8 13.2 14.8 15.8 15.6 15.0 10 0 2.4 7.1 000000 1017.0 3.0 0.0 2.3
05 8 18 13 02 97 14.6 95 19.7 12.6 12.3 14.9 15.2 15.9 16.2 15.7 14.9 10 0 2.7 0.3 000000 1008.0 0.6 0.0 0.9
06 8 32 05 02 97 15.4 76 20.4 13.5 13.3 15.5 15.6 16.0 16.2 15.6 14.9 10 0 0.7 3.2 000000 1015.0 1.2 0.0 1.7
07 8 24 09 02 97 16.1 88 20.2 13.6 13.6 16.2 16.2 16.4 16.5 15.7 14.9 10 0 0.7 2.7 000000 1014.5 0.3 0.0 1.5
08 8 21 09 50 97 16.4 92 19.1 14.6 14.5 16.1 16.2 16.5 16.4 15.7 15.0 10 0 12.5 0.0 000000 1007.5 9.1 0.0 0.7
09 8 15 05 63 94 17.0 95 20.4 14.5 14.3 16.2 16.4 16.4 16.4 15.7 15.0 10 0 2.2 2.7 000000 1002.0 1.3 0.0 1.1
10 2 18 05 02 97 17.4 65 20.2 9.8 7.7 13.8 14.4 15.8 16.4 15.7 15.0 10 0 0.9 8.0 000000 1008.0 0.2 0.0 1.9
11 3 18 05 02 97 16.4 71 20.6 9.7 7.8 13.6 14.2 15.5 16.5 15.8 15.0 10 0 0.3 10.7 000000 1015.5 0.1 0.0 2.0
12 8 19 02 02 97 14.4 85 18.3 9.0 7.9 14.2 14.5 15.7 16.7 16.1 15.0 10 0 1.1 0.1 000000 1020.0 1.0 0.0 0.8
13 0 31 05 02 97 18.3 63 22.4 9.2 7.5 13.7 14.0 15.3 16.1 15.8 15.1 10 0 0.0 13.5 000000 1020.5 0.0 0.0 2.5
14 0 32 02 02 97 15.2 58 25.1 9.3 4.2 14.0 14.5 15.9 16.8 16.2 15.1 10 0 0.0 14.6 000000 1027.0 0.0 0.0 3.0
15 3 27 02 02 97 21.9 61 26.1 13.0 10.7 16.2 16.0 17.0 17.6 16.6 15.1 00 0 0.0 10.0 000000 1025.0 0.0 0.0 2.8
16 7 36 02 02 97 20.6 77 25.2 16.8 14.5 18.3 18.3 18.2 18.4 17.2 15.4 00 0 0.0 8.4 000000 1020.5 0.0 0.0 2.8
17 7 34 05 02 97 17.7 70 22.6 13.1 10.8 16.4 16.8 17.8 18.4 17.5 15.6 00 0 0.0 7.1 000000 1020.5 0.0 0.0 2.6
18 8 36 02 02 97 17.6 77 23.6 14.0 12.1 16.6 16.9 17.8 18.2 17.5 15.8 00 0 0.0 6.0 000000 1020.5 0.0 0.0 2.9
19 7 03 02 02 97 19.5 65 24.9 13.3 11.5 16.3 16.6 17.7 18.0 17.5 15.9 00 0 0.0 11.1 000000 1020.0 0.0 0.0 3.0
20 6 20 05 02 97 19.8 68 24.1 13.9 12.2 17.2 17.4 18.2 18.6 17.7 16.0 90 0 tr 6.0 000000 1014.5 0.0 0.0 2.6
21 7 33 09 02 97 15.8 75 20.1 11.0 8.5 16.1 16.4 17.7 18.4 17.9 16.1 90 0 0.0 3.5 000000 1017.5 0.0 0.0 1.8
22 7 21 02 02 97 19.2 51 22.2 8.8 6.9 14.6 15.2 17.0 17.8 17.6 16.1 90 0 0.0 4.3 000000 1020.0 0.0 0.0 2.4
23 8 23 09 02 97 18.0 81 19.7 14.0 11.6 17.2 17.3 17.8 17.9 17.5 16.2 90 0 tr 0.6 000000 1012.0 0.0 0.0 1.6
24 7 25 05 02 97 17.9 72 20.3 14.7 14.1 16.7 16.9 17.8 17.8 17.4 16.1 90 0 0.0 1.6 000000 1016.5 0.0 0.0 1.9
25 7 22 09 02 97 18.5 58 21.8 12.1 9.4 16.6 16.6 17.4 17.7 17.3 16.1 90 0 0.0 3.0 000000 1016.5 0.0 0.0 1.8
26 8 23 05 02 96 19.3 86 27.4 16.6 13.8 18.1 17.9 18.2 18.0 17.5 16.1 90 0 0.0 10.0 000000 1017.0 0.0 0.0 2.4
27 7 21 02 02 97 18.4 80 25.1 15.9 13.5 19.2 19.0 17.8 18.9 18.2 16.2 90 0 0.0 6.0 000000 1017.5 0.0 0.0 2.2
28 2 22 02 02 97 24.5 61 29.2 15.8 13.1 19.2 18.9 19.0 18.9 18.3 16.4 90 0 0.0 12.5 000000 1017.5 0.0 0.0 2.5
29 7 33 02 02 97 25.5 63 31.1 16.1 13.5 19.2 19.1 19.5 19.5 18.9 16.6 90 0 0.0 8.8 000100 1017.0 0.0 0.0 3.1
30 1 00 00 02 96 22.6 70 25.2 18.4 15.5 20.2 20.4 20.7 20.3 19.5 16.8 90 0 18.2 0.2 000000 1011.0 6.2 0.0 1.4
31 8 31 05 61 95 18.0 95 21.8 17.0 16.4 18.8 19.3 20.1 20.0 10.5 17.0 10 0 18.0 0.8 000100 1006.5 4.2 0.0 0.3
Monthly means
18.0 74 22.3 12.9 11.2 16.2 16.4 17.1 17.5 16.7 15.6 1014.2
Monthly totals
77.9 170.2 39.5 0.0 61.0
Highest values
25.5 31.1 18.4 16.4 20.2 20.4 20.7 20.3 19.5 17.0 18.2 14.6 11.4 0.0 3.1
Lowest values
12.4 48 16.8 7.4 4.2 12.8 13.2 14.8 15.8 10.5 14.9
1971-2000 monthly climatological averages
74 22.7 13.0 11.0 16.3 16.8 17.7 17.5 16.6 15.3 39.7 193.4 1017.1 29.5 0.0 78.5
Number of days with
2002 normal
Snow/sleet falling 0 0.0
50% snow cover 09GMT 0 0.0
Hail or ice pellets 0 0.2
Thunder 2 2.0
Gale 0 0.0
Fog at 09GMT 0 0.0
Air frost 0 0.0
Ground frost 0 0.0
0.2mm precipitation 14 10.7
1.0mm precipitation 10 7.5
5.0mm precipitation 4 2.3
No sunshine 1 1.5
A dull, wet and slightly cooler than normal July. Hot spells from 14th-16th and 26th-30th.
Frequent rain 1st-12th, then no measurable rain until the 30th and 31st when heavy falls occurred.
Wettest July since 1991.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
02 sky not changing 61 continuous light rain
50 intermittent light drizzle 63 continuous moderate rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR August 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 8 18 02 02 95 14.8 95 20.5 12.3 10.6 16.6 17.1 18.4 19.3 18.8 17.1 10 0 0.0 2.9 000100 1012.0 0.0 0.0 1.6
02 3 36 02 02 97 19.2 70 23.1 10.3 9.3 14.9 15.6 17.4 18.5 18.3 17.2 10 0 0.2 8.8 000000 1010.5 0.8 0.0 1.9
03 7 04 05 21 97 17.6 82 20.9 15.0 12.2 16.8 17.1 17.8 18.2 18.0 17.1 10 0 2.5 2.2 000000 1011.0 2.0 0.0 1.4
04 6 36 02 03 97 16.5 80 22.3 13.1 12.2 16.1 16.1 17.6 18.4 18.0 17.0 10 0 1.2 5.7 000000 1012.0 0.5 0.0 1.2
05 8 35 05 02 97 19.5 77 21.6 11.3 10.1 15.6 16.1 17.5 18.3 18.1 17.0 10 0 1.2 3.9 000100 1014.0 0.4 0.0 1.2
06 8 27 02 50 95 19.5 81 23.9 15.0 13.1 17.1 17.2 17.9 18.2 17.9 17.0 10 0 0.0 7.3 000000 1016.0 0.0 0.0 2.0
07 2 00 00 02 97 23.3 67 26.8 15.1 13.2 17.2 17.7 18.4 18.6 18.1 16.9 10 0 4.9 7.5 000000 1017.0 1.7 0.0 2.0
08 8 31 05 02 97 15.5 93 19.8 15.4 14.6 17.8 18.3 19.0 19.1 18.4 17.0 10 0 5.7 1.1 000000 1012.0 8.4 0.0 0.8
09 8 18 05 21 95 17.0 93 18.6 14.2 14.5 16.7 17.1 17.9 18.5 18.2 17.1 10 0 8.8 0.5 000100 1002.5 2.3 0.0 0.6
10 7 31 05 02 97 16.5 90 22.3 13.4 12.5 16.1 16.2 17.1 17.9 18.0 17.0 10 0 0.0 4.7 000000 1004.0 0.0 0.0 1.4
11 7 27 02 02 97 18.0 76 21.7 13.5 11.5 17.7 17.2 17.3 17.7 17.6 17.0 10 0 0.1 4.0 000000 1007.5 0.1 0.0 1.6
12 7 22 02 02 97 18.4 68 22.8 14.7 13.6 16.8 17.2 17.8 18.0 17.6 16.9 10 0 0.0 7.7 000000 1013.0 0.0 0.0 2.2
13 8 20 02 02 97 18.8 86 25.1 12.5 11.2 15.4 15.6 17.0 17.8 17.6 16.9 10 0 0.0 9.0 000000 1019.5 0.0 0.0 2.1
14 7 00 00 02 97 20.2 82 25.5 15.2 13.1 16.9 17.2 18.0 18.3 17.7 16.9 00 0 0.0 10.8 000000 1019.0 0.0 0.0 2.3
15 7 09 02 02 97 20.5 75 28.6 16.0 14.4 17.3 17.7 18.4 18.2 18.0 16.9 00 0 0.0 11.0 000000 1015.0 0.0 0.0 2.3
16 5 36 02 02 96 19.6 71 26.8 15.3 14.1 17.6 17.9 18.9 19.2 18.5 17.0 00 0 0.0 13.8 000000 1018.0 0.0 0.0 2.5
17 3 14 02 02 97 23.0 67 29.1 14.1 13.2 17.2 17.6 18.7 19.4 18.7 17.1 00 0 0.0 11.0 000000 1013.0 0.0 0.0 3.4
18 6 18 02 02 97 20.0 77 25.5 17.2 16.9 18.4 18.9 19.5 19.8 18.9 17.2 00 0 0.8 5.5 000000 1010.5 0.9 0.0 2.2
19 7 36 02 21 97 19.0 88 24.1 17.0 16.1 17.5 18.2 19.7 19.9 18.9 17.3 00 0 tr 4.0 000000 1011.5 0.0 0.0 2.1
20 8 27 02 02 96 18.5 85 22.5 16.8 15.5 17.5 17.5 19.2 19.7 18.9 17.3 00 0 0.2 1.5 000000 1013.5 0.6 0.0 1.9
21 2 32 05 02 96 18.0 85 22.2 13.1 12.7 16.5 16.9 18.1 19.2 18.7 17.4 00 0 0.0 12.0 000000 1019.5 0.0 0.0 2.9
22 7 22 05 02 97 18.0 67 22.9 11.5 9.2 16.0 16.4 17.8 18.9 18.6 17.3 00 0 0.3 12.0 000000 1020.5 0.3 0.0 2.4
23 7 25 05 60 96 16.0 85 20.6 14.0 13.5 15.0 16.1 18.2 18.9 18.4 17.2 00 0 0.0 1.5 000000 1019.0 0.0 0.0 1.2
24 3 32 02 02 96 18.0 82 23.8 13.3 10.8 14.5 14.8 16.7 18.6 18.2 17.2 00 0 1.6 7.0 000000 1020.5 1.2 0.0 1.6
25 8 36 05 03 96 16.0 96 20.2 13.3 11.0 14.0 14.8 16.7 18.6 18.1 17.1 01 0 0.0 3.0 000000 1025.0 0.0 0.0 1.9
26 7 36 09 02 97 15.0 75 16.7 11.8 9.9 13.0 13.5 15.6 18.2 17.9 17.1 00 0 0.0 0.2 000000 1025.5 0.0 0.0 1.3
27 7 36 09 02 97 15.0 86 21.1 14.3 14.0 14.0 14.8 16.0 17.7 17.5 17.0 00 0 0.0 5.5 000000 1022.0 0.0 0.0 1.4
28 7 36 05 02 95 16.5 85 20.9 12.4 8.6 12.0 14.8 16.1 17.7 17.5 16.8 00 0 0.0 6.0 000000 1022.0 0.0 0.0 0.9
29 7 27 05 10 94 18.0 83 23.3 12.9 11.0 15.0 15.2 16.6 17.8 17.5 16.8 90 0 0.0 2.5 000000 1020.5 0.0 0.0 1.5
30 7 22 05 02 97 20.0 81 21.4 16.3 15.8 16.5 16.6 17.7 18.2 17.6 16.9 90 0 0.1 3.0 000000 1018.5 0.1 0.0 1.9
31 1 32 05 02 97 17.0 66 19.1 12.0 10.3 14.5 15.2 16.7 18.0 17.7 17.1 90 0 0.0 10.0 000000 1023.0 0.0 0.0 2.7
Monthly means
18.2 80 22.7 13.9 12.5 16.1 16.5 17.7 18.5 18.1 17.1 1015.7
Monthly totals
27.6 185.6 19.3 0.0 56.4
Highest values
23.3 29.1 17.2 16.9 18.4 18.9 19.7 19.9 18.9 17.4 8.8 13.8 8.4 0.0 3.4
Lowest values
14.8 66 16.7 10.3 8.6 12.0 13.5 15.6 17.7 17.5 16.8
1971-2000 monthly climatological averages
76 22.4 12.6 10.5 16.0 16.7 17.7 17.8 17.3 16.4 54.2 188.5 1016.8 32.1 0.0 78.7
Number of days with
2002 normal
Snow/sleet falling 0 0.0
50% snow cover 09GMT 0 0.0
Hail or ice pellets 0 0.1
Thunder 3 2.0
Gale 0 0.0
Fog at 09GMT 0 0.3
Air frost 0 0.0
Ground frost 0 0.0
0.2mm precipitation 11 10.1
1.0mm precipitation 7 7.1
5.0mm precipitation 2 3.2
No sunshine 0 1.6
An unremarkable month, unsettled at first then mostly dry during the
final three weeks. No heavy falls of rain, and no prolonged hot weather.
It was the night temperatures that lifted the mean temperature for the month.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 10 mist, 11 shallow fog patches,
21 recent rain, 41 fog, 50 intermittent slight drizzle,60 intermittent slight rain, 80 light rain shower
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
Return to top of document
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 1 27 02 02 97 15.0 72 20.8 7.6 5.7 12.9 14.2 16.2 16.7 17.9 17.1 90 0 0.0 10.5 000000 1031.0 0.0 0.0 1.8
02 7 36 02 02 97 16.3 75 21.8 7.8 6.0 13.0 13.8 15.9 17.1 17.7 17.1 90 0 0.0 9.0 000000 1029.0 0.0 0.0 2.5
03 7 36 02 02 97 18.4 83 23.4 14.7 8.7 15.6 15.7 16.5 17.0 17.6 17.0 90 0 0.0 3.1 000000 1019.5 0.0 0.0 1.8
04 5 36 02 03 96 18.8 71 22.8 9.8 7.8 13.9 14.8 16.4 17.1 17.4 16.9 90 0 0.0 6.5 000000 1012.5 0.0 0.0 1.9
05 7 00 00 02 96 16.4 81 22.8 11.2 8.4 14.7 15.1 16.4 17.2 17.4 16.9 90 0 0.8 5.6 000000 1014.0 1.0 0.0 2.3
06 8 27 02 53 95 19.2 80 21.7 15.4 14.7 16.7 16.8 17.4 17.4 17.4 16.9 10 0 2.9 5.8 000000 1013.5 3.2 0.0 2.3
07 7 35 02 21 97 14.7 93 20.3 13.3 12.2 15.9 16.3 17.0 17.4 17.6 16.9 10 0 0.1 6.1 000000 1008.0 0.1 0.0 1.9
08 7 27 02 02 97 15.6 76 20.3 8.0 6.0 13.8 13.8 15.8 17.0 17.4 16.9 10 0 0.9 7.2 000000 1007.5 0.3 0.0 1.5
09 8 14 02 02 96 14.5 95 17.8 9.7 8.1 13.6 13.9 16.4 16.7 17.3 16.9 10 0 15.8 0.0 000000 1008.5 11.7 0.0 0.2
10 0 36 02 02 96 17.8 79 20.2 8.1 5.7 11.9 12.8 14.6 16.0 16.6 16.8 10 0 0.0 10.2 000000 1019.5 0.0 0.0 1.4
11 0 00 00 02 96 18.1 69 22.7 7.3 5.7 11.7 12.6 14.5 15.9 16.4 16.5 10 0 0.0 10.8 000000 1027.5 0.0 0.0 2.6
12 0 04 02 02 95 19.0 77 23.4 13.7 10.3 14.8 15.2 16.0 16.4 16.4 16.4 10 0 0.0 9.8 000000 1026.5 0.0 0.0 2.3
13 0 07 05 02 96 18.0 86 25.2 13.6 10.2 14.2 14.8 15.9 16.4 16.5 16.4 10 0 0.0 11.6 000000 1026.0 0.0 0.0 3.0
14 8 09 02 02 97 16.2 77 19.1 14.7 12.0 15.3 15.6 16.1 16.5 16.6 16.3 10 0 0.0 4.8 000000 1028.0 0.0 0.0 2.4
15 8 05 02 02 97 14.8 77 17.5 14.1 13.3 14.9 15.2 16.0 16.5 16.6 16.4 10 0 0.0 0.9 000000 1027.0 0.0 0.0 1.7
16 6 02 02 02 96 16.4 66 18.6 7.8 5.0 11.9 12.8 15.0 16.0 16.3 16.3 00 0 0.0 3.1 000000 1023.0 0.0 0.0 1.9
17 7 05 02 02 97 15.2 81 18.8 10.2 7.6 13.4 13.8 14.9 15.7 16.2 16.2 00 0 0.0 1.1 000000 1020.5 0.0 0.0 1.6
18 2 07 02 02 97 15.0 74 17.8 10.5 7.4 13.2 13.9 15.4 15.7 15.9 16.1 00 0 0.0 2.2 000000 1018.5 0.0 0.0 1.8
19 6 04 02 02 97 15.5 70 19.5 11.9 7.9 13.4 13.9 15.1 15.7 15.9 16.0 00 0 0.0 2.0 000000 1017.5 0.0 0.0 1.9
20 7 05 02 02 97 15.5 81 18.3 13.9 11.7 14.6 14.9 15.5 15.9 15.8 15.9 00 0 tr 0.2 000000 1022.0 0.0 0.0 1.6
21 8 05 02 02 97 14.8 75 18.7 12.1 10.7 14.0 14.3 15.3 15.7 15.7 15.8 00 0 0.0 3.2 000000 1021.5 0.0 0.0 1.9
22 7 01 02 02 97 15.7 75 17.7 11.1 7.9 13.6 14.1 15.0 15.5 15.7 15.8 00 0 tr 4.0 000000 1018.5 0.0 0.0 1.8
23 0 02 02 01 97 15.4 67 18.4 9.0 5.5 11.4 12.1 14.0 15.0 15.6 15.8 00 0 0.0 8.1 000000 1022.5 0.0 0.0 2.6
24 1 03 02 02 97 14.6 65 17.1 8.2 4.6 10.6 11.4 13.5 14.6 15.3 15.7 00 0 0.0 8.8 000000 1025.5 0.0 0.0 2.2
25 4 28 02 02 97 11.1 88 18.9 5.8 3.4 10.1 11.1 13.2 14.5 15.2 15.5 90 0 0.2 6.7 000000 1024.0 0.3 0.0 2.3
26 7 22 09 02 97 15.6 78 17.6 10.8 9.7 12.8 13.1 14.1 14.6 15.1 15.4 90 0 0.0 7.4 000000 1019.5 0.0 0.0 1.9
27 8 27 02 03 97 14.5 86 17.5 7.0 4.6 11.7 12.1 13.2 14.3 15.0 15.3 90 0 0.0 0.0 000000 1026.0 0.0 0.0 1.1
28 0 07 02 02 96 14.7 73 18.2 8.9 6.1 12.0 12.8 14.0 14.5 14.8 15.1 90 0 0.0 5.5 000000 1028.5 0.0 0.0 1.4
29 9 00 00 45 02 12.1 97 19.4 8.1 5.7 12.8 12.8 13.7 14.5 15.0 15.1 90 0 0.0 6.5 000000 1027.5 0.0 0.0 2.0
30 5 09 02 02 97 14.5 80 20.3 7.0 4.6 10.6 11.1 13.1 14.2 14.8 15.1 90 0 0.0 7.5 000000 1023.0 0.0 0.0 2.1
Monthly means
15.8 78 19.9 10.4 7.9 13.3 13.8 15.2 15.9 16.3 16.2 1021.2
Monthly totals
20.7 168.2 16.6 0.0 57.7
Highest values
19.2 25.2 15.4 14.7 16.7 16.8 17.4 17.4 17.9 17.1 15.8 11.6 11.7 0.0 3.0
Lowest values
11.1 65 17.1 5.8 3.4 10.1 11.1 13.1 14.2 14.8 15.1
1971-2000 monthly climatological averages
83 19.1 10.3 7.9 13.3 13.9 15.0 15.6 15.5 15.4 60.3 131.7 1016.4 41.2 0.0 46.2
Number of days with
2002 normal
Snow/sleet falling 0 0.0
50% snow cover 09GMT 0 0.0
Hail or ice pellets 0 0.2
Thunder 0 1.2
Gale 0 0.2
Fog at 09GMT 0 0.4
Air frost 0 0.0
Ground frost 0 0.3
0.2mm precipitation 5 12.5
1.0mm precipitation 2 9.1
5.0mm precipitation 1 3.7
No sunshine 2 2.9
A remarkably dry month, with most of the rain falling on a single day, and only 0.2mm
during the final 21 days of the month. However, the Septembers of 1996 and 1997 were much drier.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
1 cloud decreasing 45 fog
2 sky not changing 53 continuous moderate drizzle
3 cloud increasing
21 recent rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 3 00 00 02 97 12.7 87 21.3 9.1 5.2 11.4 11.9 13.3 14.1 14.7 15.0 90 0 0.1 2.2 000000 1021.0 0.2 0.0 1.7
02 8 00 00 02 95 15.5 95 18.8 12.7 11.6 14.1 14.3 14.5 14.5 14.8 14.9 10 0 0.2 3.1 000000 1019.0 1.0 0.0 0.8
03 8 00 00 50 96 15.1 92 19.7 14.0 11.2 14.5 14.7 14.9 15.0 14.9 14.9 10 0 0.0 7.3 000000 1023.5 0.0 0.0 1.5
04 2 27 02 02 97 12.3 82 17.8 5.3 2.7 10.0 11.0 13.3 14.5 14.9 14.9 90 0 0.0 7.2 000000 1029.5 0.0 0.0 1.6
05 4 35 02 02 96 11.0 93 19.6 6.5 2.4 10.1 10.6 12.5 13.9 14.7 14.9 90 0 0.0 4.1 000000 1027.5 0.0 0.0 1.6
06 6 36 09 02 97 14.8 86 17.6 11.0 9.5 12.7 13.0 14.0 14.2 14.6 14.8 90 0 0.0 7.8 000000 1021.5 0.0 0.0 1.8
07 8 34 02 02 97 12.3 80 15.8 11.4 8.5 12.6 12.8 13.7 14.3 14.6 14.7 90 0 0.2 0.3 000000 1019.5 0.8 0.0 1.2
08 8 00 00 02 96 12.7 89 15.4 11.3 10.1 12.8 12.9 13.8 14.2 14.6 14.7 10 0 0.0 1.5 000000 1012.5 0.0 0.0 1.6
09 2 11 02 02 96 12.0 75 14.8 8.0 4.6 10.0 10.7 12.5 13.7 14.4 14.6 90 0 tr 7.3 000000 1007.0 0.0 0.0 1.5
10 8 07 05 02 97 12.5 85 16.5 10.9 9.9 11.7 11.8 12.5 13.4 14.1 14.5 90 0 0.0 3.5 000000 1009.5 0.0 0.0 2.2
11 7 09 05 05 95 11.9 85 13.9 10.7 9.2 11.9 12.1 13.0 13.5 14.0 14.5 90 0 3.6 0.0 000000 1013.0 7.3 0.0 1.4
12 8 15 02 21 94 11.0 95 15.3 9.6 8.9 11.6 11.8 12.7 13.4 13.8 14.3 10 0 0.0 6.2 000000 1009.0 0.0 0.0 1.0
13 6 08 02 02 97 5.6 93 10.3 4.0 8.0 9.3 9.5 11.2 12.6 13.5 14.2 10 0 12.8 0.0 000000 1011.0 15.8 0.0 0.4
14 8 27 09 02 95 9.9 90 11.2 5.6 8.5 11.0 11.1 11.6 12.4 13.1 14.1 10 0 5.0 0.0 000000 1004.0 5.2 0.0 0.1
15 8 09 05 61 94 9.6 97 14.1 8.5 5.0 10.1 10.3 11.2 12.1 12.7 13.9 10 0 17.7 0.0 000000 1002.5 4.9 0.0 0.7
16 8 28 05 02 97 9.3 88 11.3 8.7 6.8 10.6 10.3 11.3 12.1 12.7 13.7 10 0 0.0 0.0 000000 1001.0 0.0 0.0 0.9
17 5 33 09 02 97 7.4 83 11.6 4.2 1.5 7.3 8.2 10.1 11.4 12.3 13.5 10 0 2.5 6.1 000000 1005.5 1.2 0.0 0.8
18 8 29 02 03 96 5.3 96 10.1 1.7 -0.4 6.6 7.2 9.3 11.1 12.6 13.4 10 0 2.5 4.4 000000 1008.0 1.0 0.0 0.5
19 1 12 02 02 96 5.3 97 11.3 -1.1 -3.4 4.5 5.3 8.0 10.2 11.2 13.1 10 0 0.0 6.5 000000 1020.0 0.0 4.5 1.1
20 8 12 02 02 97 6.9 84 12.1 3.1 -0.1 7.0 7.1 8.4 9.9 10.7 12.8 10 0 3.7 0.0 000000 1016.5 6.2 0.0 0.8
21 8 16 05 02 97 12.1 93 16.9 6.9 5.1 8.9 8.8 9.0 10.0 10.6 12.5 10 0 9.0 0.9 000000 995.0 5.2 0.0 0.6
22 8 23 05 25 95 14.5 95 16.2 11.7 6.9 11.5 11.1 10.9 10.8 10.7 12.4 10 0 4.0 0.2 000000 983.0 2.5 0.0 0.7
23 2 36 05 02 97 10.1 69 11.6 7.8 4.4 8.4 9.4 11.0 11.4 11.3 12.3 10 0 0.0 9.2 000000 1000.0 0.0 0.0 1.6
24 1 35 02 02 97 5.9 82 14.3 -0.2 -2.6 5.5 6.4 9.0 10.7 11.2 12.4 10 0 3.3 3.9 000000 1008.5 0.8 0.4 1.3
25 8 22 05 21 96 14.3 84 16.1 5.9 5.2 10.3 9.9 10.0 10.5 11.0 12.3 10 0 3.3 3.3 000000 992.0 1.0 0.0 1.7
26 0 23 17 02 97 14.0 63 15.7 8.5 4.4 8.1 8.4 9.9 10.9 11.0 12.1 10 0 2.4 7.3 000000 1009.0 2.3 0.0 2.7
27 7 30 30 02 97 12.9 67 13.7 9.5 8.4 10.8 10.7 11.0 11.0 10.7 12.1 10 0 0.1 5.4 000000 996.5 0.3 0.0 2.0
28 6 22 02 02 97 8.6 89 14.8 3.2 -1.2 6.6 7.2 9.1 10.7 11.0 12.1 10 0 tr 4.4 000000 1028.5 0.0 0.0 0.7
29 8 15 05 60 97 10.6 80 13.8 7.6 3.5 9.1 9.1 9.7 10.6 10.7 12.0 10 0 tr 0.1 000000 1014.0 0.0 0.0 1.1
30 8 12 05 02 97 10.1 90 11.0 10.0 7.1 10.6 10.6 10.9 11.0 10.7 11.9 10 0 5.2 0.0 000000 1014.0 9.3 0.0 0.2
31 8 10 02 60 08 11.0 93 13.5 9.8 9.1 10.6 10.6 10.8 10.9 11.0 11.9 10 0 0.1 0.0 000000 1018.5 0.1 0.0 0.6
Monthly means
10.9 86 14.7 7.6 5.5 10.2 10.3 11.4 12.2 12.7 13.5 1011.0
Monthly totals
75.7 102.2 65.1 4.9 36.4
Highest values
15.5 21.3 14.0 11.6 14.5 14.7 14.9 15.0 14.9 15.0 17.7 9.2 15.8 4.5 2.7
Lowest values
5.3 63 10.1 -1.1 -3.4 4.5 5.3 8.0 9.9 10.6 11.9
1971-2000 monthly climatological averages
88 15.0 7.3 4.9 9.9 10.5 11.5 12.2 12.6 13.2 68.7 100.4 1015.1 51.8 4.8 35.6
Number of days with
2002 normal
Snow/sleet falling 0 0.0
50% snow cover 09GMT 0 0.0
Hail or ice pellets 0 0.2
Thunder 0 0.5
Gale 0 0.2
Fog at 09GMT 0 2.0
Air frost 2 0.8
Ground frost 5 4.5
0.2mm precipitation 15 14.0
1.0mm precipitation 13 11.4
5.0mm precipitation 5 4.6
No sunshine 8 6.6
A mild and generally dry start to the month, followed by cooler,
unsettled conditions. Very windy on the 27th, with gusts to 60mph.
First October air frost since 1997.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
2 sky not changing 50 intermittent slight rain
3 cloud increasing 60 intermittent slight rain
5 haze 61 continuous slight rain
21 recent rain
25 recent rain shower
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR NOVEMBER 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 8 18 02 02 96 13.3 92 14.9 11.5 7.1 11.1 11.1 11.2 11.4 11.2 11.9 10 0 6.5 0.1 000000 1016.5 5.0 0.0 0.3
02 9 00 00 45 03 11.1 99 15.5 9.1 5.1 10.5 10.3 11.1 11.5 11.3 11.9 10 0 14.2 0.0 000001 1013.5 7.8 0.0 0.4
03 3 27 05 02 97 11.2 87 14.7 9.5 4.8 10.1 10.5 11.5 11.9 11.5 12.0 10 0 3.5 4.3 000000 1003.5 1.4 0.0 0.7
04 2 31 05 02 97 8.9 95 14.5 6.3 1.6 8.3 8.8 10.2 11.4 11.5 12.0 10 0 0.0 7.5 000000 1016.0 0.0 0.0 0.8
05 7 24 02 02 97 9.3 95 14.2 6.0 1.8 9.0 9.2 9.9 10.9 11.3 12.1 10 0 8.5 0.0 000000 1021.0 3.8 0.0 0.4
06 8 18 09 21 97 13.7 92 13.8 9.3 11.0 11.9 11.7 11.4 11.5 11.2 12.1 10 0 9.8 0.0 000000 1009.5 5.0 0.0 0.4
07 0 27 02 02 97 7.6 75 11.2 5.2 0.9 7.2 7.8 9.6 11.0 11.3 12.0 10 0 1.7 7.7 000000 1017.0 2.9 0.0 0.6
08 8 22 05 61 96 7.9 97 13.5 5.0 1.6 7.7 7.7 8.8 10.3 10.8 12.0 10 0 8.6 0.0 000000 1012.0 8.0 0.0 0.3
09 7 27 02 02 97 8.5 91 11.1 7.9 4.6 9.4 9.4 9.9 10.5 10.6 11.8 10 0 8.0 2.1 000000 1005.5 9.0 0.0 0.9
10 8 14 05 60 94 10.5 97 14.8 8.2 6.2 9.5 9.4 9.9 10.5 10.5 11.6 10 0 1.8 0.0 000000 1000.5 1.2 0.0 0.3
11 2 20 02 02 96 8.1 96 13.2 5.7 2.0 7.7 7.8 9.4 10.5 10.7 11.5 10 0 16.7 5.5 000000 1001.5 6.4 0.0 1.0
12 8 18 05 61 95 10.9 95 12.1 8.1 5.0 8.7 9.1 9.5 10.2 10.5 11.5 10 0 15.3 0.2 000100 997.0 6.5 0.0 0.7
13 8 03 02 50 09 9.1 98 12.4 5.5 2.2 8.2 8.7 9.2 10.1 10.4 11.4 10 0 10.8 2.3 000000 988.0 8.1 0.0 0.6
14 8 18 17 02 96 9.6 73 13.4 8.8 4.1 9.4 9.4 9.7 10.1 10.3 11.3 10 0 2.8 4.0 000000 973.5 1.4 0.0 1.2
15 7 17 05 02 96 8.9 96 12.9 5.3 1.2 7.8 7.9 8.9 10.0 10.3 11.2 10 0 2.6 1.9 000000 987.3 2.5 0.0 0.2
16 8 00 00 44 07 7.2 97 9.9 6.9 2.7 8.3 8.3 9.0 10.0 10.1 11.1 10 0 8.6 0.3 000001 998.0 1.7 0.0 0.2
17 8 32 05 63 07 8.2 97 8.5 7.2 2.5 8.8 8.8 9.0 9.9 9.9 11.0 20 0 3.0 0.0 000001 1006.5 2.3 0.0 0.1
18 9 00 00 45 02 1.9 99 7.0 1.2 -1.5 6.2 6.6 8.0 9.5 9.7 11.0 10 0 tr 0.1 000001 1012.5 0.0 0.0 0.2
19 8 09 02 10 94 7.0 89 9.8 1.9 -0.1 7.2 7.2 7.9 9.0 9.4 10.9 10 0 0.1 1.0 000000 1009.0 0.1 0.0 0.7
20 8 12 05 02 10 8.6 96 11.0 6.6 6.9 7.7 7.7 8.3 9.0 9.3 10.7 10 0 2.2 0.0 000000 1002.5 2.4 0.0 0.5
21 8 18 02 60 96 10.2 92 10.8 7.7 2.4 8.8 8.5 8.6 9.1 9.2 10.6 10 0 6.3 0.0 000000 988.5 6.0 0.0 0.2
22 1 15 05 02 96 8.6 93 10.0 7.1 2.1 7.6 7.9 8.6 9.3 9.3 10.5 10 0 11.6 0.2 000000 989.5 8.1 0.0 0.4
23 8 18 02 60 95 9.0 95 11.4 5.9 0.6 7.3 7.2 8.1 9.1 9.3 10.5 10 0 5.6 2.4 000000 996.5 2.4 0.0 0.4
24 8 15 02 61 94 7.0 98 9.7 3.7 -0.9 6.7 6.6 7.9 8.8 9.1 10.4 20 0 4.3 1.3 000000 1002.5 2.2 0.0 0.1
25 9 02 02 45 04 7.3 99 7.6 5.3 0.4 7.0 7.3 8.0 8.6 8.9 10.3 10 0 0.1 0.0 000001 1003.5 0.3 0.0 0.0
26 6 14 02 02 94 5.5 99 11.7 4.4 2.2 6.7 6.8 8.0 8.6 8.8 10.2 10 0 0.0 2.2 000001 1009.5 0.0 0.0 0.5
27 7 14 09 03 97 9.2 86 11.6 5.5 1.6 6.7 7.2 7.9 8.5 8.7 10.1 10 0 2.4 1.2 000000 1006.5 3.1 0.0 0.9
28 7 18 02 02 97 9.5 95 12.2 8.3 2.0 7.4 7.3 8.3 8.8 8.7 10.0 10 0 5.4 0.0 000000 1003.0 3.2 0.0 0.3
29 9 18 02 45 04 7.2 98 9.1 5.9 0.9 7.1 7.2 8.0 8.6 8.7 10.0 10 0 0.0 1.2 000001 1007.5 0.0 0.0 0.2
30 8 20 02 02 97 6.2 96 12.0 6.2 5.6 7.9 7.7 8.4 8.8 8.8 10.1 10 0 5.8 0.0 000000 1019.5 8.7 0.0 0.8
Monthly means
8.7 94 11.8 6.5 2.9 8.3 8.4 9.1 9.9 10.0 11.1 1003.9
Monthly totals
166.2 45.5 109.5 0.0 14.3
Highest values
13.7 15.5 11.5 11.0 11.9 11.7 11.5 11.9 11.5 12.1 16.7 7.7 9.0 0.0 1.2
Lowest values
1.9 73 7.0 1.2 -1.5 6.2 6.6 7.9 8.5 8.7 10.0
1971-2000 monthly climatological averages
90 10.6 4.0 1.7 6.4 6.8 7.8 8.7 9.1 10.5 61.0 62.1 1015.2 55.6 28.8 21.8
Number of days with
2002 normal
Snow/sleet falling 0 0.5
50% snow cover 09GMT 0 0.0
Hail or ice pellets 0 0.2
Thunder 1 0.2
Gale 0 0.1
Fog at 09GMT 7 3.3
Air frost 0 5.4
Ground frost 3 11.5
0.2mm precipitation 24 13.7
1.0mm precipitation 24 10.4
5.0mm precipitation 15 4.9
No sunshine 11 10.1
A remarkably wet month with rainfall on many days, but with no really large totals.
Overall mild and rather cloudy, due to the cyclonic nature of the month. No air frosts or snow.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
2 sky not changing
3 cloud increasing
10 mist
21 recent rain
44,45 fog
50 intermittent slight drizzle
60 intermittent slight rain
61 continuous slight rain
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (X1 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR DECEMBER 2002
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch
DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap
01 8 14 09 61 95 12.0 95 12.0 6.2 6.2 9.9 9.4 9.1 8.9 8.9 10.0 20 0 1.8 1.6 000000 1000.0 1.2 0.0 1.2
02 7 24 09 02 97 9.7 81 10.5 7.4 3.9 7.9 7.8 8.4 8.5 9.1 9.9 10 0 1.8 2.0 000000 995.5 3.9 0.0 1.2
03 8 22 05 21 97 7.8 93 9.9 7.6 3.5 7.3 7.3 8.0 8.9 8.9 10.0 10 0 1.1 2.2 000000 1006.5 1.2 0.0 0.3
04 8 18 05 60 95 8.6 97 9.9 5.3 1.5 6.7 7.2 7.1 7.6 8.8 10.0 10 0 2.7 0.5 000000 1009.0 2.8 0.0 0.5
05 0 32 09 02 97 5.1 93 8.5 4.5 0.7 5.1 5.3 6.8 8.3 8.6 9.9 10 0 tr 6.2 000000 1022.0 0.0 0.0 1.1
06 8 36 05 50 97 8.1 92 8.3 4.6 1.2 6.2 6.4 6.9 7.9 8.3 9.8 10 0 0.2 0.0 000000 1029.9 0.8 0.0 1.1
07 8 03 13 20 96 5.5 94 6.1 4.5 3.8 6.1 6.1 7.0 7.8 8.1 9.6 10 0 tr 0.0 000000 1025.0 0.0 0.0 0.8
08 8 05 05 02 94 3.6 94 3.9 3.6 2.6 5.3 5.4 6.5 7.5 7.8 9.4 10 0 0.2 0.0 000000 1022.5 2.0 0.0 0.7
09 8 09 13 02 97 3.9 86 5.5 3.1 2.1 4.6 4.7 5.9 7.1 7.5 9.3 10 0 0.0 3.9 000000 1023.0 0.0 0.0 1.7
10 8 08 13 02 96 1.7 83 3.3 1.1 -1.6 2.8 2.9 4.5 6.5 7.2 9.1 10 0 tr 0.0 000000 1019.0 0.0 0.0 1.0
11 8 09 13 02 97 2.5 93 4.0 1.1 0.2 3.4 3.4 4.6 6.0 6.6 8.9 10 0 0.0 0.0 000000 1018.0 0.0 0.0 1.1
12 8 08 09 02 97 4.0 96 5.5 2.5 1.7 3.3 3.8 4.7 5.9 6.5 8.6 10 0 0.5 0.0 000000 1015.5 1.0 0.0 0.0
13 8 04 05 10 95 5.5 96 7.2 2.9 2.5 5.2 4.9 5.3 6.0 6.4 8.4 10 0 3.2 0.0 000000 1018.5 1.6 0.0 0.1
14 8 07 02 10 94 7.2 98 7.4 5.3 4.9 6.4 6.0 6.1 6.5 6.5 8.3 10 0 9.4 0.1 000000 1016.5 12.5 0.0 0.5
15 8 35 02 60 96 7.0 93 7.4 6.2 5.5 6.3 6.0 6.2 6.7 6.6 8.2 10 0 2.0 0.0 000000 1002.5 4.2 0.0 0.1
16 8 27 02 02 96 6.1 94 6.5 5.6 5.2 6.2 6.0 6.4 6.9 6.8 8.1 10 0 tr 0.0 000000 1012.0 0.0 0.0 0.6
17 8 03 02 02 97 5.0 94 5.5 4.7 3.7 5.5 5.5 6.3 6.9 6.8 8.2 10 0 0.0 0.0 000000 1022.5 0.0 0.0 0.6
18 8 09 02 03 96 4.0 92 6.6 -1.3 -5.1 3.4 3.3 4.9 6.7 6.7 8.2 10 0 0.0 4.9 000000 1030.0 0.0 3.5 0.8
19 2 10 05 02 96 2.9 93 6.1 1.2 -2.5 2.2 2.2 4.0 5.9 6.2 8.1 10 0 tr 3.7 000000 1027.0 0.0 0.0 0.9
20 8 09 02 03 97 2.9 95 6.6 2.2 -1.5 3.6 3.3 4.2 5.5 5.8 8.0 10 0 2.5 0.0 000000 1017.0 3.4 0.0 0.1
21 8 22 02 44 09 6.6 98 11.3 2.8 2.4 5.6 5.1 5.3 5.8 6.1 7.8 10 0 20.5 0.0 000001 1015.5 14.8 0.0 0.2
22 8 25 05 02 96 11.0 96 12.5 6.6 6.2 8.4 7.8 7.1 6.5 6.3 7.6 20 0 0.2 1.2 000000 1002.5 0.4 0.0 0.4
23 8 14 02 02 94 10.1 97 12.3 9.1 6.3 8.2 7.7 7.5 7.3 6.9 7.8 10 0 1.7 0.0 000000 1007.0 2.3 0.0 0.5
24 7 20 09 02 07 12.3 91 13.6 10.1 6.8 9.3 8.8 8.3 7.9 7.4 7.9 10 0 1.4 1.4 000000 1000.5 0.9 0.0 0.5
25 1 15 02 11 09 7.7 96 11.4 7.7 2.6 7.9 8.0 8.4 8.4 7.8 8.1 10 0 5.5 0.2 000001 1007.5 2.8 0.0 0.5
26 7 19 09 02 97 10.4 92 12.4 7.7 2.8 8.9 8.7 8.7 8.5 8.0 8.3 10 0 8.0 0.9 000000 993.5 7.3 0.0 0.6
27 4 18 05 02 97 10.8 92 12.0 9.7 6.5 9.0 9.0 9.1 8.8 8.3 8.4 10 0 0.1 0.0 000000 987.5 0.1 0.0 0.5
28 7 23 02 02 97 8.4 93 10.6 6.3 2.0 7.7 7.6 8.1 8.6 8.4 8.6 10 0 11.4 3.6 000000 998.5 4.7 0.0 0.9
29 8 14 05 63 94 8.5 98 12.6 4.8 -0.4 6.7 7.0 7.3 8.1 8.2 8.7 20 0 5.7 0.0 000000 998.5 4.7 0.0 0.4
30 8 20 02 02 95 11.1 96 11.1 8.5 7.7 9.4 9.2 9.0 8.5 8.2 8.7 10 0 22.9 0.0 000000 997.0 12.8 0.0 0.3
31 8 03 05 60 96 4.5 92 8.0 4.5 4.0 5.6 6.5 7.5 8.1 8.2 8.8 10 0 11.2 0.0 000000 1001.5 5.7 0.0 0.7
Monthly means
6.9 93 8.7 5.0 2.8 6.5 6.2 6.7 7.4 7.5 8.7 1011.0
Monthly totals
114.0 32.4 91.1 3.5 19.9
Highest values
12.3 13.6 10.1 7.7 9.9 9.4 9.1 8.9 9.1 10.0 22.9 6.2 14.8 3.5 1.7
Lowest values
1.7 81 3.3 -1.3 -5.1 2.2 2.2 4.0 5.5 5.8 7.6
1971-2000 monthly climatological averages
90 8.3 2.6 0.4 4.6 4.8 5.7 6.3 6.7 8.1 65.6 40.9 1015.2 59.2 61.4 21.1
Number of days with
2002 normal
Snow/sleet falling 0 1.7
50% snow cover 09GMT 0 1.0
Hail or ice pellets 0 0.3
Thunder 0 0.2
Gale 0 0.2
Fog at 09GMT 2 1.9
Air frost 1 7.9
Ground frost 5 15.3
0.2mm precipitation 21 15.1
1.0mm precipitation 17 11.2
5.0mm precipitation 8 4.9
No sunshine 17 14.7
A cloudy and dull month, with frequent rain making it also very wet.
Mild during and after Christmas, with cloudy conditions leading to
warm nights and little frost.
Key
DD: date
07GMT observations
N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10)
ff wind speed (knots)
ww present weather code
1 cloud decreasing 21 recent rain
2 sky not changing 44 fog
3 cloud increasing 60 intermittent slight rain
10 mist 61 continuous slight rain
11 shallow fog patches 63 continuous moderate rain
20 recent drizzle
VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good)
Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm)
09GMT observations
Temp temperature (degC) RH relative humidity (%)
E state of ground (10 moist, 20 wet, 40 frozen, X5 snow) SS snow depth (cm)
Press air pressure (mb)
24 hour readings
Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT
Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT
Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT
Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT
Days with
S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets
T thunder heard G gale F fog at 09GMT
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MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR 2002
2002 Climat. Notes
Normal
Air temperature (degC)
Mean maximum 15.5 14.7 Highest since 1999
Mean minimum 7.8 6.7 Highest on record
Mean 11.7 10.7 Warmest year on record
Highest maximum 31.1 30.0
Lowest maximum 1.4 0.0
Highest minimum 18.4 18.0
Lowest minimum -8.1 -7.1
No. of days with minimum below -5C 2
No. of days with maximum 25C or more 19
No. of days with maximum below 0C 0
No. of days with minimum 15C or more 22
Grass temperature (degC)
Lowest minimum -8.9 -10.9
Mean grass minimum 5.5 Highest on record
Soil temperature (degC)
5cm mean 10.2 9.3 Equal highest on record
10cm mean 10.3 9.7 Cooler than in several recent years
20cm mean 11.3 10.6 Cooler than in 1995, 1990 and 1989
30cm mean 11.8 11.0 Cooler than in several recent years
50cm mean 11.6 10.8 Cooler than in 1995
100cm mean 11.6 10.9 Cooler than in 1995, 1990 and 1989
5cm maximum 20.2
5cm minimum -2.5 Lowest since before 1989
10cm maximum 20.4
10cm minimm -2.0 Lowest since before 1989
20cm maximum 20.7
20cm minimm 0.4 Lowest since 1997
30cm maximum 20.3
30cm minimum 2.2 Lowest since 1997
50cm maximum 19.5
50cm minimum 2.6 Lowest since 1997
100cm maximum 17.4
100cm minimum 5.0 Lowest since 1997
Sunshine (hr)
Mean daily sunshine amount 4.15 3.96 April was the sunniest month
Total sunshine 1514.2 1446.8
Maximum daily sunshine 14.6 14.7
Number of sunless days 73 75.1 Highest since 1996
No. of days with over 12h 11
Precipitation (mm)
Total fall 832.3 653.1 Second wettest (after 2000) since 1958
Highest daily total 23.6 34.2 Lowest since 1990
No. of days with 0.2mm or more 181 155 Most since before 1984
No. of days with 1.0mm or more 143 143 Most since before 1984
No. of days with 5.0mm or more 63 43.2
Number of days with
Snow or sleet falling 1 11.2 Lowest total since before 1937
50% snow cover on round at 0900GMT 0 4.7 Last year with 0 was in 1998
Hail or ice pellets falling 5 4.5
Thunder heard 10 12.0 Lowest total since 1996
Fog at 0900GMT 13 14.0 Highest total since 1997
Air frost 15 41.1 Lowest total since before 1953
Ground frost 59 92.4 Lowest total since before 1953
Gale 0 1.9
Air pressure
Mean at 0900GMT 1014.3 1016.0
Highest 1041.5
Lowest 968.5
Miscellaneous
Mean relative humidity at 0900GMT 82
Number of hours with rain 640.9 545.9 Most since 2000
Number of hours with air frost 98.2 319.8 Lowest total since before 1985
Most hours of rain in a day 15.8
Mean cloud cover at 0700GMT (eighths) 5.7
Mean wind speed at 0700GMT (knots) 4.7
Total piche evaporation (ml) 537.8 576.5
Greatest daily evaporation (ml) 4.6
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Last updated 27 January 2003. This page is maintained by
brugge@met.reading.ac.uk
© 2003 Roger Brugge