Monthly Report for September 2009

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Weather Summary
Measure Mean / Sum (anomaly) Min Max Mean Time
Minimum Temperature 11.7 °C (+0.6) 8.5 °C 16.9 °C 07:50
Maximum Temperature 19.3 °C (+0.6) 15.5 °C 27.1 °C 14:39
Mean Temperature 15.1 °C (+0.6) 13.1 °C 20.7 °C
Minimum Humidity 57% 44% 83% 15:41
Maximum Humidity 90% 77% 98% 08:53
Mean Humidity 75% 65% 91%
Minimum Pressure 1019 hPa 993 hPa 1034 hPa 12:48
Maximum Pressure 1024 hPa 1003 hPa 1038 hPa 12:44
Mean Pressure 1022 hPa 998 hPa 1036 hPa
Mean Wind Speed 4.8 mph (+0.9) 1.1 mph 9.8 mph
Maximum Wind Speed 11.3 mph 4.5 mph 19.5 mph n/a
Maximum Gust 17.0 mph 6.4 mph 35.6 mph 12:13
Mean Wind Direction SSE N NW
Rainfall 35.9 mm (63%) 0.0 mm 25.5 mm
Maximum Hourly Rain 3.8 mm 0.5 mm 7.4 mm 15:59
Maximum 10-min Rain 1.5 mm 0.5 mm 3.3 mm 15:50
Maximum Rain Rate 18 mm/h 3.8 mm/h 33 mm/h 18:19
Minimum Dew Point 8.1 °C 4.9 °C 10.9 °C 10:17
Maximum Dew Point 12.8 °C 9.3 °C 17.8 °C 11:27
Mean Dew Point 10.4 °C 7.4 °C 15.2 °C
Night Minimum (21-09) 11.9 °C 8.5 °C 16.9 °C n/a
Day Maximum (09-21) 19.3 °C 15.5 °C 27.1 °C n/a
Max 10m Temp Rise 0.9 °C 0.4 °C 1.8 °C 12:44
Max 1hr Temp Rise 1.5 °C 1.1 °C 1.9 °C 12:42
Max 1hr Hum Rise 9% 4% 17% 14:29
Max 10m Temp Fall 0.7 °C 0.4 °C 1.4 °C 12:32
Max 1hr Temp Fall 1.3 °C 0.8 °C 1.9 °C 14:29
Max 1hr Hum Fall 10% 3% 15% 13:13
Max 10m Wind Speed 7.9 mph 2.9 mph 13.7 mph 12:38
Minimum Feels-like 12.2 °C 0.9 °C 21.4 °C 07:56
Maximum Feels-like 21.4 °C 17.1 °C 30.8 °C 14:09
Mean Feels-like 16.6 °C 13.5 °C 24.9 °C n/a
Air-frost Hrs 0 hrs 0 hrs 0 hrs n/a
Measure Mean / Sum (anomaly) Min Max
Temperature Range 7.6 °C (+0.0) 1.9 °C 11.9 °C
Humidity Range 33% 12% 50%
Pressure Range 5 hPa 2 hPa 16 hPa
Measure Sum (anom.) [% of max] Min Max
Sun Hours 129 (93%) [38%] 0 10
Wet Hours 17 (41%) [2.4%] 0 11

NB: Hover over a value to view the date it was recorded.
    Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations. Consequently, their reliablity is questionable and they         are provided for interest only.

Days Of...
Rainfall Temperature Sunshine Other
> 0.0 mm 5 Min < -5.0 °C 0 > 0 hrs 27 Falling Snow 0
> 0.1 mm 5 Min < 0.0 °C 0 > 1 hrs 21 Lying Snow 0
> 0.3 mm 3 Mean < 0.0 °C 0 > 3 hrs 17 Hail 0
> 1.0 mm 2 Mean > 20.0 °C 1 > 5 hrs 11 Thunder 0
> 5.0 mm 2 Max > 25.0 °C 1 > 10 hrs 0 Dense Fog 0
> 10.0 mm 1 Max > 30.0 °C 0 > 25% max poss. 19 Gusts > 30mph 1
> 20.0 mm 1 Min > 20.0 °C 0 > 95% max poss. 0 Total Events 1

Misc.

Mean rainfall for days with >0.2mm: 12.0 mm
Total snowfall: 0 cm - 0% of the total precipitation
Total lying snow: 0 cm

Graphs and Charts

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