Daily Report for 24th March 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.4 °C (-1.5) 06:13 5.2 °C (+1.1) 8.3 °C (+3.4), 2010 -1.0 °C (-5.9), 2014
Maximum Temperature 17.7 °C (+5.9) 13:36 12.5 °C (+1.8) 18.8 °C (+7.0), 2012 0.9 °C (-10.9), 2013
Mean Temperature 11.0 °C (+2.2) 8.8 °C (+1.4) 11.9 °C, 2012 -0.1 °C, 2013
Minimum Humidity 34% 13:55 63% 77%, 2018 33%, 2020
Maximum Humidity 95% 07:35 89% 98%, 2013 69%, 2009
Mean Humidity 62% 78% 88%, 2018 56%, 2009
Minimum Pressure 1030 hPa 15:36 1021 hPa 1030 hPa, 2022 997 hPa, 2018
Maximum Pressure 1032 hPa 23:21 1027 hPa 1038 hPa, 2011 1006 hPa, 2018
Mean Pressure 1031 hPa 1024 hPa 1032 hPa, 2011 1002 hPa, 2018
Mean Wind Speed 0.7 mph (-4.5) 4.1 mph (-1.1) 8.6 mph, 2013 0.7 mph, 2022
Maximum Wind Speed 7.0 mph 13:51 12.3 mph 16.8 mph, 2013 7.0 mph, 2022
Maximum Gust 10.3 mph 13:59 20.1 mph 25.3 mph, 2013 10.3 mph, 2022
Mean Wind Direction SSW
Rainfall 0.0 mm 26.9 mm (89%) 5.0 mm, 2016
Maximum Hourly Rain n/a 1.4, 2010
Maximum 10-min Rain n/a 0.8, 2010
Maximum Rain Rate n/a 18, 2015
Minimum Dew Point 1.2 °C 15:20 2.6 °C 7.4 °C, 2010 -6.0 °C, 2013
Maximum Dew Point 6.9 °C 10:03 7.0 °C 10.2 °C, 2010 0.5 °C, 2013
Mean Dew Point 3.1 °C 4.9 °C 8.6 °C, 2010 -2.6 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 3.4 °C 06:07 5.6 °C 8.3 °C, 2010 -1.0 °C, 2014
Day Maximum (09-21) 17.7 °C 13:31 12.4 °C 18.8 °C, 2012 0.7 °C, 2013
Max 10m Temp Rise 1.0 °C 08:43 0.5 °C 1.0 °C, 2014 0.2 °C, 2013
Max 1hr Temp Rise 4.3 °C 09:08 1.9 °C 4.9 °C, 2014 0.8 °C, 2013
Max 1hr Hum Rise 10% 19:31 7% 11%, 2020 2%, 2013
Max 10m Temp Fall 0.5 °C 18:19 0.4 °C 0.5 °C, 2012 0.2 °C, 2013
Max 1hr Temp Fall 1.7 °C 21:56 1.4 °C 2.1 °C, 2012 0.4 °C, 2013
Max 1hr Hum Fall 21% 09:31 9% 21%, 2019 3%, 2016
Max 10m Wind Speed 4.8 mph 13:56 9.6 mph 12.8 mph, 2013 4.8 mph, 2022
Minimum Feels-like 3.4 °C 05:47 2.3 °C 6.2 °C, 2010 -8.5 °C, 2013
Maximum Feels-like 17.7 °C 13:22 12.6 °C 18.8 °C, 2012 -1.8 °C, 2013
Mean Feels-like 11.0 °C 7.7 °C 11.9 °C, 2010 -5.1 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 12 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 14.3 °C (+7.4) 7.3 °C (+0.8) 14.3 °C (+7.4), 2022 1.7 °C (-5.2), 2013
Humidity Range 61% 27% 61%, 2022 17%, 2018
Pressure Range 3 hPa 6 hPa 11 hPa, 2011 3 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [90%]122 hrs (142%) [48%] 11.2 [101%], 2020 0 [0%], 2013
Wet Hours 045 hrs (110%) [7.8%] 9, 2016 , 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 10.0 °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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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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Wind rose