Daily Report for 23rd February 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.5 °C (+0.5) 06:47 5.1 °C (+2.2) 9.9 °C (+6.9), 2012 -0.6 °C (-3.6), 2018
Maximum Temperature 10.4 °C (+1.7) 13:01 10.8 °C (+2.7) 16.0 °C (+7.3), 2012 1.7 °C (-7.0), 2013
Mean Temperature 7.4 °C (+1.1) 8.2 °C (+2.5) 12.9 °C, 2012 0.7 °C, 2013
Minimum Humidity 65% 13:02 69% 84%, 2010 47%, 2017
Maximum Humidity 92% 07:38 90% 98%, 2010 76%, 2013
Mean Humidity 81% 81% 94%, 2010 66%, 2013
Minimum Pressure 1014 hPa 23:57 1009 hPa 1033 hPa, 2019 990 hPa, 2015
Maximum Pressure 1026 hPa 00:41 1020 hPa 1036 hPa, 2019 992 hPa, 2015
Mean Pressure 1022 hPa 1015 hPa 1034 hPa, 2019 990 hPa, 2015
Mean Wind Speed 7.9 mph (+2.8) 8.6 mph (+3.5) 12.9 mph, 2017 2.1 mph, 2019
Maximum Wind Speed 19.8 mph 15:51 20.0 mph 27.4 mph, 2017 8.5 mph, 2019
Maximum Gust 28.5 mph 15:43 32.8 mph 46.1 mph, 2017 11.5 mph, 2019
Mean Wind Direction WSW
Rainfall 0.0 mm 44.5 mm (120%) 3.5 mm, 2011
Maximum Hourly Rain n/a 2.6, 2017
Maximum 10-min Rain n/a 2.6, 2017
Maximum Rain Rate n/a 48, 2017
Minimum Dew Point 2.2 °C 05:19 2.1 °C 7.9 °C, 2012 -7.0 °C, 2013
Maximum Dew Point 5.7 °C 18:08 7.7 °C 11.5 °C, 2012 -2.9 °C, 2013
Mean Dew Point 4.3 °C 5.0 °C 10.2 °C, 2012 -5.0 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 3.5 °C 06:57 5.7 °C 9.7 °C, 2017 -0.6 °C, 2018
Day Maximum (09-21) 10.4 °C 13:32 10.6 °C 16.0 °C, 2012 1.7 °C, 2013
Max 10m Temp Rise 0.5 °C 08:28 0.4 °C 0.7 °C, 2019 0.2 °C, 2010
Max 1hr Temp Rise 2.5 °C 08:53 1.5 °C 2.5 °C, 2022 0.6 °C, 2010
Max 1hr Hum Rise 6% 15:18 7% 11%, 2013 4%, 2010
Max 10m Temp Fall 0.3 °C 11:01 0.6 °C 0.9 °C, 2009 0.1 °C, 2011
Max 1hr Temp Fall 0.7 °C 15:40 1.5 °C 2.6 °C, 2019 0.4 °C, 2011
Max 1hr Hum Fall 10% 12:32 9% 18%, 2020 4%, 2011
Max 10m Wind Speed 15.0 mph 15:51 15.3 mph 22.0 mph, 2017 6.2 mph, 2019
Minimum Feels-like -0.8 °C 07:32 0.6 °C 7.1 °C, 2012 -5.6 °C, 2013
Maximum Feels-like 10.4 °C 12:16 10.8 °C 17.8 °C, 2012 -0.5 °C, 2013
Mean Feels-like 5.0 °C 6.0 °C 14.2 °C, 2012 -3.2 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 5 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.9 °C (+1.3) 5.7 °C (+0.5) 9.7 °C (+4.1), 2019 2.0 °C (-3.6), 2013
Humidity Range 27% 21% 40%, 2015 14%, 2010
Pressure Range 12 hPa 12 hPa 17 hPa, 2017 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [32%]50 hrs (79%) [25%] 8 [85%], 2021 0 [0%], 2010
Wet Hours 053 hrs (124%) [9.6%] 5, 2011 , 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