Daily Report for 25th May 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.1 °C (+1.8) 05:52 8.5 °C (+0.7) 15.6 °C (+6.3), 2012 4.9 °C (-4.4), 2013
Maximum Temperature 24.2 °C (+6.5) 15:52 18.1 °C (+1.7) 25.9 °C (+8.2), 2017 12.2 °C (-5.5), 2016
Mean Temperature 16.9 °C (+4.2) 13.0 °C (+1.2) 20.1 °C, 2017 10.0 °C, 2013
Minimum Humidity 47% 16:00 46% 73%, 2018 27%, 2011
Maximum Humidity 84% 23:58 86% 97%, 2013 72%, 2011
Mean Humidity 69% 68% 82%, 2018 46%, 2011
Minimum Pressure 1010 hPa 21:48 1014 hPa 1034 hPa, 2020 1010 hPa, 2009
Maximum Pressure 1020 hPa 00:28 1019 hPa 1037 hPa, 2020 1015 hPa, 2010
Mean Pressure 1015 hPa 1017 hPa 1035 hPa, 2020 1012 hPa, 2010
Mean Wind Speed n/a (-4.7) 0.0 mph (-4.7) 6.8, 2012 1.7, 2018
Maximum Wind Speed n/a 0.0 mph 16.3, 2012 8.6, 2017
Maximum Gust n/a 0.0 mph 27.9, 2012 12.8, 2015
Mean Wind Direction n/a
Rainfall trace 12.5 mm (30%) 0.1, 2009
Maximum Hourly Rain n/a n/a
Maximum 10-min Rain n/a n/a
Maximum Rain Rate n/a n/a
Minimum Dew Point 6.4 °C 00:05 3.8 °C 11.1 °C, 2018 -0.4 °C, 2011
Maximum Dew Point 14.3 °C 23:58 9.5 °C 15.7 °C, 2017 6.6 °C, 2011
Mean Dew Point 10.8 °C 6.7 °C 12.7 °C, 2018 3.0 °C, 2011
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.1 °C 8.7 °C 15.6 °C, 2012 4.9 °C, 2013
Day Maximum (09-21) 24.2 °C 18.1 °C 25.9 °C, 2017 12.2 °C, 2016
Max 10m Temp Rise 0.8 °C 14:11 0.7 °C 1.1 °C, 2011 0.4 °C, 2010
Max 1hr Temp Rise 3.0 °C 14:55 2.3 °C 5.3 °C, 2011 1.3 °C, 2016
Max 1hr Hum Rise 11% 19:46 8% 17%, 2020 4%, 2015
Max 10m Temp Fall 0.5 °C 16:05 0.5 °C 0.7 °C, 2013 0.2 °C, 2016
Max 1hr Temp Fall 2.2 °C 16:58 1.5 °C 3.3 °C, 2013 0.5 °C, 2016
Max 1hr Hum Fall 11% 14:44 13% 18%, 2014 5%, 2016
Max 10m Wind Speed n/a 0.0 mph 11.9, 2012 6.4, 2015
Minimum Feels-like n/a 0.0 °C 18.6, 2012 0.8, 2013
Maximum Feels-like n/a 0.0 °C 29.1, 2017 12.3, 2016
Mean Feels-like n/a 0.0 °C 22.5, 2017 9, 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 13.1 °C (+4.8) 9.5 °C (+1.1) 16.8 °C (+8.5), 2020 3.4 °C (-4.9), 2016
Humidity Range 37% 40% 57%, 2013 18%, 2018
Pressure Range 10 hPa 5 hPa 16 hPa, 2011 2 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4.4 [30%]148 hrs (97%) [42%] 14.3 [98%], 2017 0 [0%], 2016
Wet Hours 0.314 hrs (42%) [2.3%] 0.3, 2009 0, 2010
Cloud Cover not available
Events None
Comments 19-1930 Light Rain
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