Daily Report for 13th February 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.1 °C (+4.3) 00:07 5.3 °C (+2.3) 7.1 °C (+4.3), 2022 -3.9 °C (-6.7), 2021
Maximum Temperature 9.8 °C (+1.8) 22:02 10.5 °C (+2.6) 11.3 °C (+3.3), 2019 1.5 °C (-6.5), 2021
Mean Temperature 8.2 °C (+3.0) 8.0 °C (+2.5) 8.2 °C, 2022 -1.1 °C, 2021
Minimum Humidity 81% 12:10 70% 83%, 2016 51%, 2014
Maximum Humidity 93% 23:26 89% 98%, 2009 75%, 2021
Mean Humidity 87% 80% 92%, 2012 64%, 2021
Minimum Pressure 992 hPa 23:57 1015 hPa 1032 hPa, 2019 983 hPa, 2016
Maximum Pressure 1014 hPa 00:00 1025 hPa 1035 hPa, 2021 993 hPa, 2016
Mean Pressure 1002 hPa 1020 hPa 1034 hPa, 2021 986 hPa, 2016
Mean Wind Speed 10.9 mph (+5.8) 7.5 mph (+2.4) 10.9 mph, 2022 4.1 mph, 2012
Maximum Wind Speed 19.5 mph 13:53 16.7 mph 20.9 mph, 2020 12.0 mph, 2016
Maximum Gust 29.7 mph 17:52 28.5 mph 33.4 mph, 2018 17.0 mph, 2016
Mean Wind Direction SSW
Rainfall 9.4 mm 21.1 mm (101%) 9.4 mm, 2022
Maximum Hourly Rain 1.7 mm 16:17 2.9 mm, 2020
Maximum 10-min Rain 0.5 mm 16:04 0.9 mm, 2020
Maximum Rain Rate 2.4 mm/h 16:04 18 mm/h, 2020
Minimum Dew Point 4.4 °C 00:07 2.5 °C 4.4 °C, 2022 -8.7 °C, 2021
Maximum Dew Point 8.6 °C 22:02 7.2 °C 8.6 °C, 2022 -5.1 °C, 2021
Mean Dew Point 6.2 °C 4.8 °C 6.2 °C, 2022 -7.2 °C, 2021
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 6.5 °C * 21:15 5.8 °C 6.8 °C, 2019 -3.9 °C, 2021
Day Maximum (09-21) * 9.7 °C * 20:52 10.2 °C 11.3 °C, 2019 1.1 °C, 2021
Max 10m Temp Rise 0.2 °C 16:13 0.4 °C 0.5 °C, 2012 0.1 °C, 2011
Max 1hr Temp Rise 0.6 °C 17:07 1.4 °C 1.6 °C, 2017 0.5 °C, 2011
Max 1hr Hum Rise 7% 13:57 6% 9%, 2012 3%, 2011
Max 10m Temp Fall 0.2 °C 13:25 0.5 °C 0.5 °C, 2018 0.1 °C, 2013
Max 1hr Temp Fall 0.8 °C 14:07 1.4 °C 1.4 °C, 2017 0.3 °C, 2013
Max 1hr Hum Fall 3% 06:18 7% 15%, 2012 3%, 2011
Max 10m Wind Speed 15.3 mph 10:07 13.0 mph 15.9 mph, 2020 7.8 mph, 2010
Minimum Feels-like 2.0 °C 01:08 1.0 °C 2.6 °C, 2019 -12.5 °C, 2021
Maximum Feels-like 8.7 °C 16:54 10.6 °C 11.3 °C, 2019 -1.5 °C, 2021
Mean Feels-like 4.6 °C 5.9 °C 6.5 °C, 2019 -6.6 °C, 2021
Air-frost Hrs 0 hrs 0 hrs 14 hrs, 2021 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.7 °C (-2.5) 5.2 °C (+0.3) 6.6 °C (+1.4), 2015 2.7 °C (-2.5), 2022
Humidity Range 12% 19% 35%, 2009 9%, 2016
Pressure Range 23 hPa 10 hPa 23 hPa, 2022 2 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]32 hrs (92%) [29%] 7 [80%], 2017 0 [0%], 2011
Wet Hours 10
[Mean rain rate: 0.9 mm/h]
25 hrs (104%) [8%] 12, 2016 , 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 5.0 °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 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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Webcam Summary of Cloud Conditions

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