Daily Report for 28th March 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 1.9 °C (-3.2) 07:15 5.1 °C (+0.8) 8.7 °C (+3.6), 2021 -1.2 °C (-6.3), 2013
Maximum Temperature 14.6 °C (+2.3) 16:15 12.9 °C (+2.0) 20.8 °C (+8.5), 2012 4.0 °C (-8.3), 2013
Mean Temperature 8.6 °C (-0.5) 9.0 °C (+1.4) 12.5 °C, 2012 1.7 °C, 2013
Minimum Humidity 66% 16:21 62% 78%, 2021 27%, 2012
Maximum Humidity 94% 08:16 89% 98%, 2014 61%, 2012
Mean Humidity 81% 77% 86%, 2018 43%, 2012
Minimum Pressure 1018 hPa 23:59 1022 hPa 1034 hPa, 2019 974 hPa, 2016
Maximum Pressure 1030 hPa 00:01 1028 hPa 1038 hPa, 2019 997 hPa, 2016
Mean Pressure 1024 hPa 1025 hPa 1036 hPa, 2019 987 hPa, 2016
Mean Wind Speed 0.5 mph (-4.7) 3.8 mph (-1.4) 12.2 mph, 2021 0.5 mph, 2022
Maximum Wind Speed 5.6 mph 20:19 11.8 mph 24.1 mph, 2016 4.0 mph, 2017
Maximum Gust 11.4 mph 01:27 19.3 mph 44.9 mph, 2016 7.3 mph, 2017
Mean Wind Direction ESE
Rainfall 0.0 mm 26.9 mm (76%) 11.7 mm, 2018
Maximum Hourly Rain n/a 3.9, 2016
Maximum 10-min Rain n/a 1.1, 2016
Maximum Rain Rate n/a 18, 2016
Minimum Dew Point 0.6 °C 07:13 2.5 °C 5.5 °C, 2021 -7.5 °C, 2013
Maximum Dew Point 8.8 °C 17:47 7.2 °C 10.8 °C, 2015 -1.4 °C, 2013
Mean Dew Point 5.3 °C 4.9 °C 7.8 °C, 2015 -4.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 1.9 °C 07:15 5.4 °C 8.5 °C, 2021 -1.2 °C, 2013
Day Maximum (09-21) 14.6 °C 16:16 12.8 °C 20.8 °C, 2012 4.0 °C, 2013
Max 10m Temp Rise 0.9 °C 08:19 0.6 °C 1.2 °C, 2012 0.2 °C, 2021
Max 1hr Temp Rise 3.1 °C 09:03 2.0 °C 6.3 °C, 2012 0.7 °C, 2021
Max 1hr Hum Rise 8% 21:38 7% 20%, 2016 2%, 2021
Max 10m Temp Fall 0.3 °C 18:00 0.4 °C 1.4 °C, 2009 0.2 °C, 2014
Max 1hr Temp Fall 1.2 °C 19:17 1.4 °C 3.6 °C, 2009 0.7 °C, 2021
Max 1hr Hum Fall 9% 11:00 9% 30%, 2014 3%, 2021
Max 10m Wind Speed 3.0 mph 20:27 9.1 mph 18.4 mph, 2016 3.0 mph, 2022
Minimum Feels-like 1.9 °C 07:10 2.4 °C 5.7 °C, 2019 -6.8 °C, 2013
Maximum Feels-like 15.2 °C 16:11 13.0 °C 20.8 °C, 2012 1.7 °C, 2013
Mean Feels-like 8.7 °C 8.0 °C 12.5 °C, 2012 -2.2 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 7 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 12.7 °C (+5.5) 7.8 °C (+1.2) 17.5 °C (+10.3), 2012 3.4 °C (-3.8), 2021
Humidity Range 28% 27% 54%, 2014 5%, 2021
Pressure Range 12 hPa 6 hPa 23 hPa, 2016 2 hPa, 2017
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]132 hrs (130%) [44%] 11.42 [101%], 2012 0 [0%], 2015
Wet Hours 045 hrs (94%) [6.7%] 10, 2018 , 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 10.5 °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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