Daily Report for 11th August 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 15.5 °C (+2.0) 06:00 14.5 °C (+0.9) 20.2 °C (+6.7), 2020 8.0 °C (-5.5), 2018
Maximum Temperature 24.4 °C (+1.9) 15:55 22.7 °C (+0.1) 33.4 °C (+10.9), 2020 20.7 °C (-1.8), 2014
Mean Temperature 19.5 °C (+1.9) 18.3 °C (+0.5) 26.9 °C, 2020 15.8 °C, 2018
Minimum Humidity 51% 17:10 56% 67%, 2011 36%, 2013
Maximum Humidity 92% 00:02 93% 97%, 2010 74%, 2013
Mean Humidity 73% 76% 78%, 2011 55%, 2013
Minimum Pressure 1016 hPa 00:06 1015 hPa 1020 hPa, 2016 1004 hPa, 2014
Maximum Pressure 1022 hPa 14:19 1019 hPa 1026 hPa, 2012 1009 hPa, 2014
Mean Pressure 1019 hPa 1017 hPa 1022 hPa, 2018 1007 hPa, 2014
Mean Wind Speed 3.7 mph (-0.3) 3.0 mph (-1.0) 8.1 mph, 2019 0.8 mph, 2015
Maximum Wind Speed 10.4 mph 8.5 mph 19.4 mph, 2016 5.9 mph, 2015
Maximum Gust 15.3 mph 16:45 12.3 mph 30.0 mph, 2019 7.8 mph, 2015
Mean Wind Direction W
Rainfall 0.0 mm 36.4 mm (194%) 7.3 mm, 2014
Maximum Hourly Rain n/a 5.6, 2014
Maximum 10-min Rain n/a 3, 2014
Maximum Rain Rate n/a 90, 2014
Minimum Dew Point 13.0 °C 18:33 11.0 °C 17.5 °C, 2020 5.7 °C, 2013
Maximum Dew Point 16.3 °C 00:02 16.2 °C 20.6 °C, 2020 13.0 °C, 2017
Mean Dew Point 14.3 °C 13.7 °C 18.8 °C, 2020 9.1 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 15.5 °C 14.6 °C 20.2 °C, 2020 8.0 °C, 2018
Day Maximum (09-21) 24.4 °C 22.7 °C 33.4 °C, 2020 20.7 °C, 2014
Max 10m Temp Rise n/a 23:46 0.4 °C 1.2, 2020 0.4, 2011
Max 1hr Temp Rise n/a 13:41 1.5 °C 4.7, 2020 1.5, 2011
Max 1hr Hum Rise n/a 23:34 7% 22, 2014 6, 2011
Max 10m Temp Fall n/a 23:56 0.4 °C 2.3, 2014 0.3, 2012
Max 1hr Temp Fall n/a 20:59 1.3 °C 4.9, 2014 1, 2016
Max 1hr Hum Fall n/a 13:47 6% 19, 2012 7, 2015
Max 10m Wind Speed 6.6 mph 17:33 5.9 mph 14.8 mph, 2016 3.7 mph, 2015
Minimum Feels-like 18.6 °C 05:45 15.3 °C 25.9 °C, 2020 6.5 °C, 2018
Maximum Feels-like 28.2 °C 15:50 24.5 °C 40.8 °C, 2020 21.6 °C, 2014
Mean Feels-like 23.0 °C 19.7 °C 33.5 °C, 2020 17.3 °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 8.9 °C (-0.1) 8.2 °C (-0.8) 13.8 °C (+4.8), 2018 6.6 °C (-2.4), 2011
Humidity Range 41% 36% 54%, 2010 22%, 2011
Pressure Range 6 hPa 4 hPa 11 hPa, 2012 3 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [44%]50 hrs (75%) [33%] 9.5 [70%], 2020 0.1 [1%], 2015
Wet Hours 09.8 hrs (73%) [3.7%] 3, 2014 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

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


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Wind rose