Daily Report for 21st February 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.3 °C (+1.4) 04:04 5.2 °C (+2.3) 11.4 °C (+8.5), 2016 -1.2 °C (-4.1), 2010
Maximum Temperature 10.7 °C (+2.3) 13:08 10.7 °C (+2.7) 14.5 °C (+6.1), 2016 1.8 °C (-6.6), 2013
Mean Temperature 7.6 °C (+1.8) 8.2 °C (+2.5) 12.8 °C, 2016 1.2 °C, 2013
Minimum Humidity 65% 16:20 70% 84%, 2011 49%, 2014
Maximum Humidity 82% 23:37 89% 98%, 2010 63%, 2013
Mean Humidity 72% 81% 92%, 2010 55%, 2013
Minimum Pressure 1002 hPa 06:31 1008 hPa 1030 hPa, 2009 991 hPa, 2010
Maximum Pressure 1023 hPa 23:34 1020 hPa 1033 hPa, 2009 998 hPa, 2010
Mean Pressure 1011 hPa 1014 hPa 1032 hPa, 2009 994 hPa, 2010
Mean Wind Speed 12.1 mph (+7.0) 8.7 mph (+3.6) 12.4 mph, 2016 2.7 mph, 2010
Maximum Wind Speed 30.5 mph 12:14 19.9 mph 30.5 mph, 2022 9.4 mph, 2011
Maximum Gust 44.5 mph 01:22 33.1 mph 44.5 mph, 2022 13.5 mph, 2010
Mean Wind Direction WNW
Rainfall 0.0 mm 44.3 mm (131%) 4.4 mm, 2010
Maximum Hourly Rain n/a 1.9, 2010
Maximum 10-min Rain n/a 0.8, 2010
Maximum Rain Rate n/a 16, 2010
Minimum Dew Point 0.0 °C 01:40 2.1 °C 9.1 °C, 2016 -8.4 °C, 2013
Maximum Dew Point 5.7 °C 12:33 7.7 °C 11.0 °C, 2016 -4.5 °C, 2013
Mean Dew Point 2.8 °C 5.0 °C 9.9 °C, 2016 -6.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 4.3 °C 04:06 5.8 °C 11.4 °C, 2016 -1.2 °C, 2010
Day Maximum (09-21) 10.7 °C 13:21 10.5 °C 14.5 °C, 2016 1.7 °C, 2013
Max 10m Temp Rise 0.4 °C 12:59 0.4 °C 0.9 °C, 2009 0.1 °C, 2013
Max 1hr Temp Rise 1.2 °C 08:49 1.4 °C 2.3 °C, 2009 0.2 °C, 2013
Max 1hr Hum Rise 10% 14:25 7% 10%, 2022 2%, 2017
Max 10m Temp Fall 0.5 °C 12:35 0.7 °C 0.9 °C, 2009 0.1 °C, 2011
Max 1hr Temp Fall 1.4 °C 14:28 1.6 °C 2.0 °C, 2009 0.4 °C, 2011
Max 1hr Hum Fall 10% 15:25 8% 15%, 2015 2%, 2011
Max 10m Wind Speed 22.8 mph 12:22 15.3 mph 22.8 mph, 2022 6.6 mph, 2011
Minimum Feels-like -2.5 °C 01:22 0.5 °C 12.3 °C, 2016 -6.1 °C, 2013
Maximum Feels-like 10.7 °C 13:05 10.7 °C 16.2 °C, 2016 0.2 °C, 2013
Mean Feels-like 4.4 °C 6.0 °C 14.0 °C, 2016 -3.2 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 5 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.4 °C (+0.9) 5.5 °C (+0.4) 9.6 °C (+4.1), 2009 1.3 °C (-4.2), 2013
Humidity Range 17% 20% 40%, 2014 9%, 2011
Pressure Range 20 hPa 12 hPa 20 hPa, 2022 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [22%]45 hrs (78%) [24%] 8.6 [93%], 2009 0 [0%], 2011
Wet Hours 052 hrs (133%) [10%] 3, 2010 , 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 6.5 °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 are initially pulled from the official weather station at Heathrow, and later adjusted by hand to reflect local conditions based on webcam observations. Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually. Cloud cover and Events are manually reported, often with multi-week delays.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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Wind rose