Daily Report for 18th February 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.2 °C (+4.2) 21:51 0.2 °C (-1.9) 6.2 °C (+4.2), 2009 -0.8 °C (-2.8), 2010
Maximum Temperature 9.5 °C (+2.0) 11:55 5.5 °C (-1.7) 11.3 °C (+3.8), 2017 4.8 °C (-2.7), 2010
Mean Temperature 7.8 °C (+3.1) 2.9 °C (-1.8) 8.4 °C, 2019 2.1 °C, 2010
Minimum Humidity 78% 12:51 68% 88%, 2010 51%, 2016
Maximum Humidity 97% 06:05 95% 98%, 2010 81%, 2015
Mean Humidity 88% 81% 96%, 2010 71%, 2015
Minimum Pressure 1026 hPa 17:44 1005 hPa 1031 hPa, 2015 986 hPa, 2010
Maximum Pressure 1027 hPa 10:07 1013 hPa 1042 hPa, 2015 992 hPa, 2010
Mean Pressure 1026 hPa 1009 hPa 1036 hPa, 2015 989 hPa, 2010
Mean Wind Speed n/a (-5.1) 0.0 mph (-5.1) 8.1, 2020 2.6, 2010
Maximum Wind Speed n/a 0.0 mph 20.4, 2012 8.8, 2017
Maximum Gust n/a 0.0 mph 34.6, 2020 10.9, 2010
Mean Wind Direction n/a
Rainfall 0.0 mm 61.6 mm (240%) 9.0 mm, 2010
Maximum Hourly Rain n/a 4.3, 2014
Maximum 10-min Rain n/a 2.1, 2014
Maximum Rain Rate n/a 60, 2014
Minimum Dew Point 4.3 °C 21:15 -2.6 °C 4.8 °C, 2014 -4.9 °C, 2016
Maximum Dew Point 8.2 °C 00:07 2.7 °C 8.5 °C, 2014 2.2 °C, 2015
Mean Dew Point 6.3 °C 0.3 °C 6.8 °C, 2014 -0.1 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 6.9 °C * 0.4 °C 8.7 °C, 2019 -0.8 °C, 2010
Day Maximum (09-21) 9.5 °C 5.5 °C 11.3 °C, 2017 4.8 °C, 2010
Max 10m Temp Rise 1.3 °C 09:39 0.4 °C 1.3 °C, 2009 0.2 °C, 2017
Max 1hr Temp Rise 1.8 °C 10:26 0.8 °C 3.7 °C, 2018 0.5 °C, 2019
Max 1hr Hum Rise 3% 15:17 5% 14%, 2012 2%, 2010
Max 10m Temp Fall 0.8 °C 09:29 0.4 °C 1.7 °C, 2012 0.2 °C, 2010
Max 1hr Temp Fall 1.3 °C 21:03 0.8 °C 3.6 °C, 2012 0.7 °C, 2010
Max 1hr Hum Fall 8% 11:00 5% 13%, 2016 1%, 2010
Max 10m Wind Speed n/a 0.0 mph 14.5, 2020 5.7, 2010
Minimum Feels-like n/a 0.0 °C 2.9, 2017 -3.6, 2010
Maximum Feels-like n/a 0.0 °C 11.3, 2017 4.8, 2010
Mean Feels-like n/a 0.0 °C 6.9, 2014 1.1, 2010
Air-frost Hrs 0 hrs 4 hrs 8 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.3 °C (-2.2) 5.3 °C (+0.2) 8.4 °C (+2.9), 2018 3.3 °C (-2.2), 2009
Humidity Range 19% 28% 41%, 2016 8%, 2019
Pressure Range 1 hPa 8 hPa 12 hPa, 2012 1 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [11%]50 hrs (107%) [32%] 9 [99%], 2015 0 [0%], 2019
Wet Hours 0 hrs (0%) [0%] 6, 2010 , 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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