Daily Report for 22nd August 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.2 °C (-1.8) 05:19 14.4 °C (+1.0) 17.7 °C (+4.7), 2010 11.0 °C (-2.0), 2011
Maximum Temperature 21.7 °C (-0.4) 15:35 22.7 °C (+0.3) 30.0 °C (+7.9), 2015 19.8 °C (-2.3), 2014
Mean Temperature 16.2 °C (-1.1) 18.2 °C (+0.6) 22.2 °C, 2015 15.4 °C, 2014
Minimum Humidity 50% 19:00 54% 70%, 2018 33%, 2015
Maximum Humidity 90% 07:06 91% 92%, 2010 83%, 2014
Mean Humidity 70% 74% 86%, 2013 62%, 2014
Minimum Pressure 1021 hPa 10:34 1015 hPa 1024 hPa, 2019 1006 hPa, 2010
Maximum Pressure 1024 hPa 11:19 1019 hPa 1026 hPa, 2019 1013 hPa, 2014
Mean Pressure 1022 hPa 1017 hPa 1025 hPa, 2019 1010 hPa, 2014
Mean Wind Speed 3.1 mph (-0.9) 3.6 mph (-0.4) 9.5 mph, 2016 1.7 mph, 2013
Maximum Wind Speed 9.7 mph 9.9 mph 19.9 mph, 2020 6.4 mph, 2013
Maximum Gust 12.5 mph 15:05 14.5 mph 34.6 mph, 2020 8.1 mph, 2013
Mean Wind Direction SW
Rainfall 0.0 mm 38.3 mm (102%) 5.2 mm, 2013
Maximum Hourly Rain n/a 2.5, 2013
Maximum 10-min Rain n/a 1.5, 2013
Maximum Rain Rate n/a 18, 2013
Minimum Dew Point 8.2 °C 01:42 10.7 °C 15.7 °C, 2010 4.5 °C, 2014
Maximum Dew Point 13.1 °C 15:11 15.7 °C 18.1 °C, 2010 11.1 °C, 2014
Mean Dew Point 10.3 °C 13.2 °C 16.7 °C, 2010 7.7 °C, 2014
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.2 °C 14.5 °C 17.7 °C, 2010 11.0 °C, 2011
Day Maximum (09-21) 21.7 °C 22.7 °C 30.0 °C, 2015 19.8 °C, 2014
Max 10m Temp Rise 0.5 °C 10:33 0.5 °C 1.0 °C, 2011 0.3 °C, 2013
Max 1hr Temp Rise 2.0 °C 10:51 1.5 °C 4.3 °C, 2011 1.0 °C, 2013
Max 1hr Hum Rise 8% 21:40 7% 14%, 2011 5%, 2016
Max 10m Temp Fall 0.4 °C 15:53 0.5 °C 0.7 °C, 2018 0.3 °C, 2013
Max 1hr Temp Fall 1.9 °C 21:08 1.3 °C 1.9 °C, 2009 1.0 °C, 2010
Max 1hr Hum Fall 12% 11:38 8% 16%, 2014 4%, 2013
Max 10m Wind Speed 6.1 mph 14:10 6.8 mph 15.3 mph, 2020 5.0 mph, 2013
Minimum Feels-like 12.1 °C 04:24 15.9 °C 22.3 °C, 2010 11.5 °C, 2011
Maximum Feels-like 24.3 °C 15:09 25.3 °C 33.9 °C, 2015 19.8 °C, 2014
Mean Feels-like 17.6 °C 20.3 °C 25.4 °C, 2015 15.9 °C, 2014
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.5 °C (+1.4) 8.3 °C (-0.7) 15.2 °C (+6.1), 2015 3.6 °C (-5.5), 2013
Humidity Range 40% 38% 57%, 2015 20%, 2018
Pressure Range 3 hPa 4 hPa 11 hPa, 2010 2 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [54%]107 hrs (82%) [36%] 11 [85%], 2015 1 [8%], 2010
Wet Hours 015 hrs (57%) [2.9%] 4, 2010 0, 2009
Cloud Cover not available
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? No
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