Daily Report for 4th September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.3 °C (-1.8) 06:57 12.6 °C (+0.5) 15.9 °C (+3.8), 2016 10.1 °C (-2.0), 2010
Maximum Temperature 18.0 °C (-2.8) 16:43 18.5 °C (-2.3) 26.8 °C (+6.0), 2013 15.3 °C (-5.5), 2015
Mean Temperature 13.9 °C (-2.3) 15.1 °C (-0.9) 19.7 °C, 2013 12.8 °C, 2015
Minimum Humidity 44% 16:31 51% 80%, 2017 42%, 2013
Maximum Humidity 90% 07:34 91% 97%, 2017 84%, 2015
Mean Humidity 67% 71% 90%, 2017 67%, 2009
Minimum Pressure 1003 hPa 04:05 998 hPa 1022 hPa, 2012 1003 hPa, 2009
Maximum Pressure 1016 hPa 23:28 1010 hPa 1025 hPa, 2012 1007 hPa, 2011
Mean Pressure 1010 hPa 1004 hPa 1024 hPa, 2012 1006 hPa, 2011
Mean Wind Speed 7.4 mph (+3.5) 7.2 mph (+3.3) 9.0 mph, 2016 2.3 mph, 2013
Maximum Wind Speed 18.1 mph 17.2 mph 20.2 mph, 2016 7.8 mph, 2014
Maximum Gust 27.5 mph 13:47 28.2 mph 32.3 mph, 2016 10.7 mph, 2014
Mean Wind Direction W
Rainfall 0.0 mm 10.1 mm (133%) 8.8 mm, 2017
Maximum Hourly Rain n/a 3.3, 2011
Maximum 10-min Rain n/a 1.5, 2017
Maximum Rain Rate n/a 13, 2017
Minimum Dew Point 4.9 °C 16:09 7.0 °C 13.2 °C, 2016 4.9 °C, 2009
Maximum Dew Point 9.3 °C 08:29 12.6 °C 18.6 °C, 2017 9.3 °C, 2009
Mean Dew Point 7.4 °C 9.6 °C 15.7 °C, 2017 7.4 °C, 2009
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.3 °C 12.9 °C 15.9 °C, 2016 10.1 °C, 2010
Day Maximum (09-21) 18.0 °C 18.5 °C 26.8 °C, 2013 15.3 °C, 2015
Max 10m Temp Rise 0.5 °C 12:36 0.7 °C 0.9 °C, 2010 0.4 °C, 2016
Max 1hr Temp Rise 1.6 °C 14:02 1.2 °C 3.7 °C, 2013 1.0 °C, 2016
Max 1hr Hum Rise 8% 23:55 9% 13%, 2020 3%, 2017
Max 10m Temp Fall 0.4 °C 14:20 0.6 °C 0.8 °C, 2019 0.2 °C, 2014
Max 1hr Temp Fall 1.0 °C 18:55 1.1 °C 2.3 °C, 2012 0.7 °C, 2014
Max 1hr Hum Fall 11% 09:17 9% 19%, 2019 7%, 2015
Max 10m Wind Speed 13.7 mph 16:09 12.0 mph 16.5 mph, 2016 5.7 mph, 2015
Minimum Feels-like 11.0 °C 06:49 13.6 °C 20.1 °C, 2016 10.3 °C, 2015
Maximum Feels-like 18.0 °C 16:34 20.2 °C 30.5 °C, 2013 16.4 °C, 2015
Mean Feels-like 14.1 °C 16.3 °C 23.4 °C, 2013 13.2 °C, 2015
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.7 °C (-1.0) 5.9 °C (-2.8) 13.3 °C (+4.6), 2013 3.7 °C (-5.0), 2016
Humidity Range 46% 40% 54%, 2013 17%, 2017
Pressure Range 13 hPa 12 hPa 13 hPa, 2009 2 hPa, 2018
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [58%]19 hrs (96%) [39%] 12 [99%], 2013 0.1 [1%], 2016
Wet Hours 05.8 hrs (106%) [6%] 11, 2017 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

daygraph daygraph 2 daygraph-wdir

Webcam Summary of Cloud Conditions


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Wind rose