Daily Report for 31st August 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 16.1 °C (+3.7) 00:14 14.1 °C (+0.9) 16.1 °C (+3.7), 2009 6.7 °C (-5.7), 2012
Maximum Temperature 25.4 °C (+4.2) 16:06 22.5 °C (+0.4) 25.4 °C (+4.2), 2009 15.7 °C (-5.5), 2015
Mean Temperature 19.4 °C (+4.0) 17.9 °C (+0.6) 19.4 °C, 2009 12.5 °C, 2020
Minimum Humidity 34% 17:57 52% 89%, 2015 34%, 2009
Maximum Humidity 96% 09:02 90% 96%, 2009 80%, 2012
Mean Humidity 73% 73% 92%, 2015 57%, 2013
Minimum Pressure 1003 hPa 22:47 1014 hPa 1026 hPa, 2012 1003 hPa, 2009
Maximum Pressure 1016 hPa 00:35 1018 hPa 1030 hPa, 2012 1016 hPa, 2009
Mean Pressure 1010 hPa 1016 hPa 1029 hPa, 2012 1010 hPa, 2009
Mean Wind Speed 4.7 mph (+0.7) 4.0 mph (+0.0) 5.2 mph, 2019 0.2 mph, 2020
Maximum Wind Speed 10.4 mph 10.9 mph 16.8 mph, 2012 5.3 mph, 2020
Maximum Gust 16.1 mph 15:44 16.2 mph 26.5 mph, 2019 7.8 mph, 2011
Mean Wind Direction SW
Rainfall 0.0 mm 42.1 mm (79%) 17.5 mm, 2015
Maximum Hourly Rain n/a 9.3, 2015
Maximum 10-min Rain n/a 3.9, 2015
Maximum Rain Rate n/a 54, 2015
Minimum Dew Point 6.7 °C 18:20 10.0 °C 12.8 °C, 2015 2.7 °C, 2012
Maximum Dew Point 17.9 °C 11:49 15.4 °C 17.9 °C, 2009 7.8 °C, 2012
Mean Dew Point 13.5 °C 12.7 °C 13.5 °C, 2009 4.6 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 16.1 °C 14.1 °C 16.1 °C, 2009 6.7 °C, 2012
Day Maximum (09-21) 25.4 °C 22.5 °C 25.4 °C, 2009 15.4 °C, 2015
Max 10m Temp Rise 0.6 °C 15:04 0.5 °C 0.8 °C, 2010 0.2 °C, 2015
Max 1hr Temp Rise 2.5 °C 12:40 1.5 °C 3.9 °C, 2010 0.8 °C, 2015
Max 1hr Hum Rise 7% 19:20 7% 14%, 2019 2%, 2015
Max 10m Temp Fall 0.7 °C 21:11 0.5 °C 1.5 °C, 2019 0.2 °C, 2015
Max 1hr Temp Fall 2.2 °C 20:47 1.4 °C 4.7 °C, 2019 0.6 °C, 2015
Max 1hr Hum Fall 15% 12:59 8% 15%, 2009 1%, 2015
Max 10m Wind Speed 7.5 mph 13:11 7.7 mph 12.9 mph, 2019 2.6 mph, 2020
Minimum Feels-like 17.8 °C 23:55 15.4 °C 17.8 °C, 2009 4.2 °C, 2012
Maximum Feels-like 28.4 °C 15:19 24.9 °C 28.4 °C, 2009 17.6 °C, 2020
Mean Feels-like 22.7 °C 19.9 °C 22.7 °C, 2009 12.6 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.3 °C (+0.5) 8.5 °C (-0.5) 11.3 °C (+2.5), 2012 1.6 °C (-7.2), 2015
Humidity Range 62% 39% 62%, 2009 4%, 2015
Pressure Range 13 hPa 4 hPa 13 hPa, 2009 1 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [48%]157 hrs (86%) [38%] 11 [89%], 2010 0 [0%], 2015
Wet Hours 022 hrs (57%) [2.9%] 12, 2015 0, 2009
Cloud Cover not available
Events None
Comments
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations (entered with a delay of 1-10 days); their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions


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Wind rose