Daily Report for 27th September 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.0 °C (-1.4) 03:23 11.7 °C (+0.5) 13.3 °C (+2.9), 2017 8.7 °C (-1.7), 2015
Maximum Temperature 20.9 °C (+3.8) 15:58 19.4 °C (+0.5) 23.6 °C (+6.5), 2018 15.7 °C (-1.4), 2010
Mean Temperature 13.7 °C (+1.2) 15.1 °C (+0.5) 17.0 °C, 2018 12.6 °C, 2012
Minimum Humidity 55% 16:35 56% 80%, 2010 29%, 2018
Maximum Humidity 92% 09:04 90% 98%, 2010 84%, 2016
Mean Humidity 78% 74% 91%, 2010 62%, 2018
Minimum Pressure 1027 hPa 11:53 1019 hPa 1031 hPa, 2015 999 hPa, 2012
Maximum Pressure 1029 hPa 10:44 1024 hPa 1036 hPa, 2015 1008 hPa, 2019
Mean Pressure 1028 hPa 1022 hPa 1033 hPa, 2015 1005 hPa, 2019
Mean Wind Speed 1.7 mph (-2.2) 5.0 mph (+1.1) 7.1 mph, 2019 0.8 mph, 2014
Maximum Wind Speed 6.4 mph 11.6 mph 20.8 mph, 2016 4.9 mph, 2014
Maximum Gust 9.8 mph 05:32 17.5 mph 33.9 mph, 2016 7.8 mph, 2014
Mean Wind Direction N
Rainfall 0.0 mm 35.9 mm (70%) 13.9 mm, 2017
Maximum Hourly Rain n/a 4.8, 2017
Maximum 10-min Rain n/a 3.5, 2019
Maximum Rain Rate n/a 92, 2019
Minimum Dew Point 6.8 °C 02:46 7.9 °C 12.5 °C, 2017 4.3 °C, 2018
Maximum Dew Point 12.9 °C 14:00 12.8 °C 15.8 °C, 2011 10.9 °C, 2012
Mean Dew Point 9.7 °C 10.3 °C 13.6 °C, 2011 7.9 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.0 °C 11.9 °C 13.3 °C, 2017 8.7 °C, 2015
Day Maximum (09-21) 20.9 °C 19.4 °C 23.6 °C, 2018 15.7 °C, 2010
Max 10m Temp Rise n/a 12:43 0.2 °C 0.8, 2018 0.3, 2011
Max 1hr Temp Rise n/a 13:33 0.3 °C 3.3, 2018 1.3, 2011
Max 1hr Hum Rise n/a 18:39 2% 17, 2012 3, 2010
Max 10m Temp Fall n/a 12:33 0.2 °C 0.8, 2018 0.1, 2010
Max 1hr Temp Fall n/a 12:33 0.3 °C 3.1, 2018 0.4, 2010
Max 1hr Hum Fall n/a 13:33 2% 19, 2018 5, 2016
Max 10m Wind Speed 4.2 mph 09:34 8.2 mph 14.5 mph, 2016 3.7 mph, 2014
Minimum Feels-like 7.7 °C 05:32 12.2 °C 15.8 °C, 2017 7.2 °C, 2015
Maximum Feels-like 23.3 °C 15:45 21.5 °C 24.5 °C, 2011 16.7 °C, 2012
Mean Feels-like 14.6 °C 16.6 °C 19.4 °C, 2017 13.3 °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 11.9 °C (+5.1) 7.7 °C (-0.0) 13.3 °C (+6.5), 2018 4.7 °C (-2.1), 2019
Humidity Range 37% 34% 61%, 2018 13%, 2016
Pressure Range 2 hPa 5 hPa 14 hPa, 2012 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 9.5 [88%]123 hrs (98%) [40%] 10.8 [101%], 2018 0.1 [1%], 2010
Wet Hours 017 hrs (46%) [2.6%] 4, 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

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Wind rose