Daily Report for 12th September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.5 °C (+0.0) 06:49 12.3 °C (+0.5) 14.6 °C (+3.1), 2011 8.5 °C (-3.0), 2012
Maximum Temperature 22.1 °C (+2.7) 16:00 19.9 °C (-0.3) 24.4 °C (+5.0), 2016 16.3 °C (-3.1), 2018
Mean Temperature 15.7 °C (+1.3) 15.7 °C (+0.1) 18.4 °C, 2019 13.1 °C, 2018
Minimum Humidity 49% 16:59 52% 72%, 2013 48%, 2011
Maximum Humidity 92% 08:18 89% 97%, 2013 83%, 2012
Mean Humidity 72% 72% 87%, 2018 65%, 2015
Minimum Pressure 1028 hPa 20:46 1015 hPa 1028 hPa, 2009 995 hPa, 2017
Maximum Pressure 1034 hPa 01:57 1023 hPa 1034 hPa, 2009 1007 hPa, 2017
Mean Pressure 1031 hPa 1019 hPa 1031 hPa, 2009 1004 hPa, 2017
Mean Wind Speed 4.0 mph (+0.1) 5.8 mph (+1.9) 10.8 mph, 2011 1.6 mph, 2018
Maximum Wind Speed 10.4 mph 13.2 mph 22.1 mph, 2011 6.7 mph, 2013
Maximum Gust 14.0 mph 10:22 20.2 mph 37.4 mph, 2011 8.7 mph, 2013
Mean Wind Direction NE
Rainfall 0.0 mm 10.1 mm (44%) 3.1 mm, 2018
Maximum Hourly Rain n/a 2.3, 2012
Maximum 10-min Rain n/a 2.3, 2012
Maximum Rain Rate n/a 60, 2012
Minimum Dew Point 8.6 °C 00:11 7.6 °C 11.8 °C, 2019 2.6 °C, 2012
Maximum Dew Point 12.9 °C 12:48 13.0 °C 17.2 °C, 2011 11.3 °C, 2012
Mean Dew Point 10.4 °C 10.2 °C 14.7 °C, 2019 6.7 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.5 °C 12.6 °C 15.5 °C, 2015 8.5 °C, 2012
Day Maximum (09-21) 22.1 °C 19.9 °C 24.4 °C, 2016 14.6 °C, 2018
Max 10m Temp Rise n/a 12:48 0.4 °C 0.8, 2012 0.3, 2018
Max 1hr Temp Rise n/a 13:10 0.8 °C 3.4, 2012 1.1, 2018
Max 1hr Hum Rise n/a 20:35 5% 14, 2017 5, 2011
Max 10m Temp Fall n/a 01:03 0.4 °C 1, 2012 0.4, 2010
Max 1hr Temp Fall n/a 20:47 0.6 °C 2.6, 2012 1, 2013
Max 1hr Hum Fall n/a 13:25 5% 16, 2014 6, 2013
Max 10m Wind Speed 9.0 mph 15:31 9.5 mph 14.8 mph, 2011 5.3 mph, 2013
Minimum Feels-like 12.6 °C 06:01 13.0 °C 15.6 °C, 2019 6.1 °C, 2012
Maximum Feels-like 24.1 °C 15:56 22.0 °C 28.9 °C, 2016 18.3 °C, 2012
Mean Feels-like 17.1 °C 17.1 °C 22.2 °C, 2019 13.3 °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 10.6 °C (+2.6) 7.6 °C (-0.8) 14.4 °C (+6.4), 2016 5.7 °C (-2.3), 2013
Humidity Range 43% 37% 44%, 2011 23%, 2018
Pressure Range 6 hPa 8 hPa 12 hPa, 2017 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [86%]61 hrs (105%) [43%] 10 [86%], 2009 0.1 [1%], 2018
Wet Hours 05.8 hrs (35%) [2%] 6, 2018 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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