Daily Report for 19th February 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.6 °C (-0.2) 07:01 5.2 °C (+2.4) 6.9 °C (+4.1), 2018 -2.2 °C (-5.1), 2013
Maximum Temperature 9.8 °C (+1.6) 16:50 10.6 °C (+2.7) 12.1 °C (+3.9), 2017 5.7 °C (-2.5), 2012
Mean Temperature 5.8 °C (+0.7) 8.1 °C (+2.5) 8.7 °C, 2017 2.2 °C, 2010
Minimum Humidity 73% 00:01 70% 88%, 2018 40%, 2012
Maximum Humidity 91% 14:50 90% 98%, 2010 76%, 2012
Mean Humidity 81% 81% 96%, 2011 61%, 2012
Minimum Pressure 1005 hPa 14:16 1009 hPa 1026 hPa, 2009 987 hPa, 2010
Maximum Pressure 1014 hPa 08:56 1020 hPa 1033 hPa, 2012 996 hPa, 2010
Mean Pressure 1011 hPa 1015 hPa 1027 hPa, 2009 992 hPa, 2010
Mean Wind Speed 8.9 mph (+3.8) 8.2 mph (+3.1) 9.3 mph, 2021 1.4 mph, 2013
Maximum Wind Speed 22.6 mph 13:18 19.0 mph 22.6 mph, 2022 7.6 mph, 2013
Maximum Gust 35.4 mph 13:20 32.3 mph 35.4 mph, 2022 10.9 mph, 2013
Mean Wind Direction WSW
Rainfall 3.8 mm 37.6 mm (123%) 11.2 mm, 2011
Maximum Hourly Rain 2.4 mm 13:02 2.5 mm, 2011
Maximum 10-min Rain 0.8 mm 12:56 0.8 mm, 2022
Maximum Rain Rate 4.8 mm/h 12:13 18 mm/h, 2015
Minimum Dew Point -0.3 °C 01:27 2.3 °C 5.4 °C, 2018 -8.1 °C, 2012
Maximum Dew Point 6.9 °C 15:57 7.7 °C 9.6 °C, 2018 -1.2 °C, 2012
Mean Dew Point 2.8 °C 5.0 °C 7.5 °C, 2018 -4.4 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.6 °C 06:53 5.8 °C 6.9 °C, 2018 -2.2 °C, 2013
Day Maximum (09-21) 9.8 °C 16:54 10.4 °C 12.1 °C, 2017 5.7 °C, 2012
Max 10m Temp Rise 0.4 °C 08:10 0.4 °C 0.8 °C, 2013 0.2 °C, 2011
Max 1hr Temp Rise 1.6 °C 08:58 1.4 °C 3.5 °C, 2013 0.8 °C, 2011
Max 1hr Hum Rise 9% 12:49 7% 12%, 2016 3%, 2011
Max 10m Temp Fall 0.4 °C 12:14 0.6 °C 0.6 °C, 2012 0.1 °C, 2011
Max 1hr Temp Fall 1.0 °C 13:00 1.4 °C 2.8 °C, 2013 0.3 °C, 2011
Max 1hr Hum Fall 12% 16:44 8% 22%, 2010 1%, 2011
Max 10m Wind Speed 17.7 mph 13:27 14.6 mph 17.7 mph, 2022 6.3 mph, 2018
Minimum Feels-like -2.8 °C 05:20 0.8 °C 3.9 °C, 2018 -4.3 °C, 2010
Maximum Feels-like 7.2 °C 16:42 10.6 °C 12.6 °C, 2021 4.6 °C, 2012
Mean Feels-like 2.1 °C 6.0 °C 7.9 °C, 2017 -0.2 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 6 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.2 °C (+1.8) 5.4 °C (+0.3) 11.0 °C (+5.6), 2013 3.3 °C (-2.1), 2011
Humidity Range 18% 20% 45%, 2013 8%, 2018
Pressure Range 9 hPa 11 hPa 20 hPa, 2015 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [11%]43 hrs (83%) [26%] 9.1 [100%], 2013 0 [0%], 2011
Wet Hours 4
[Mean rain rate: 0.9 mm/h]
49 hrs (139%) [11%] 12, 2015 , 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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