Daily Report for 11th September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.8 °C (-1.7) 06:07 12.4 °C (+0.5) 16.5 °C (+5.0), 2010 8.1 °C (-3.4), 2020
Maximum Temperature 19.7 °C (+0.1) 14:05 19.7 °C (-0.6) 21.7 °C (+2.1), 2018 16.3 °C (-3.3), 2013
Mean Temperature 14.5 °C (-0.8) 15.6 °C (-0.0) 18.7 °C, 2018 13.6 °C, 2013
Minimum Humidity 55% 17:01 52% 76%, 2018 37%, 2012
Maximum Humidity 94% 08:11 89% 94%, 2009 79%, 2012
Mean Humidity 74% 72% 82%, 2018 58%, 2012
Minimum Pressure 1034 hPa 21:03 1014 hPa 1034 hPa, 2009 991 hPa, 2017
Maximum Pressure 1038 hPa 07:40 1022 hPa 1038 hPa, 2009 1001 hPa, 2017
Mean Pressure 1036 hPa 1018 hPa 1036 hPa, 2009 994 hPa, 2017
Mean Wind Speed 5.2 mph (+1.3) 5.9 mph (+2.0) 8.3 mph, 2017 2.1 mph, 2020
Maximum Wind Speed 11.5 mph 13.5 mph 21.5 mph, 2011 7.4 mph, 2014
Maximum Gust 15.2 mph 10:08 20.7 mph 31.7 mph, 2011 9.8 mph, 2014
Mean Wind Direction NE
Rainfall 0.0 mm 10.1 mm (48%) 7.7 mm, 2017
Maximum Hourly Rain n/a 5.5, 2017
Maximum 10-min Rain n/a 3.5, 2017
Maximum Rain Rate n/a 53, 2017
Minimum Dew Point 7.7 °C 03:01 7.5 °C 13.6 °C, 2018 1.3 °C, 2012
Maximum Dew Point 12.3 °C 12:31 13.0 °C 17.7 °C, 2018 11.2 °C, 2020
Mean Dew Point 9.6 °C 10.2 °C 15.6 °C, 2018 6.8 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.8 °C 12.7 °C 16.5 °C, 2010 8.1 °C, 2020
Day Maximum (09-21) 19.7 °C 19.7 °C 21.7 °C, 2018 16.3 °C, 2013
Max 10m Temp Rise n/a 11:03 0.5 °C 1, 2016 0.3, 2018
Max 1hr Temp Rise n/a 11:51 0.8 °C 3.7, 2016 1.3, 2018
Max 1hr Hum Rise n/a 07:56 5% 20, 2015 4, 2010
Max 10m Temp Fall n/a 10:56 0.4 °C 0.9, 2016 0.2, 2010
Max 1hr Temp Fall n/a 22:51 0.7 °C 3.2, 2016 1.1, 2010
Max 1hr Hum Fall n/a 11:51 5% 28, 2016 4, 2018
Max 10m Wind Speed 7.5 mph 19:24 9.5 mph 14.4 mph, 2017 4.3 mph, 2014
Minimum Feels-like 8.2 °C 06:05 13.1 °C 19.6 °C, 2018 7.3 °C, 2016
Maximum Feels-like 22.0 °C 13:58 21.8 °C 27.5 °C, 2018 17.4 °C, 2013
Mean Feels-like 15.7 °C 17.2 °C 23.1 °C, 2018 14.7 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.9 °C (+1.8) 7.3 °C (-1.1) 12.5 °C (+4.4), 2016 4.5 °C (-3.6), 2010
Humidity Range 39% 36% 51%, 2015 13%, 2019
Pressure Range 4 hPa 8 hPa 10 hPa, 2017 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [60%]51 hrs (96%) [39%] 11.7 [100%], 2016 0 [0%], 2014
Wet Hours 05.8 hrs (39%) [2.2%] 4, 2013 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