Daily Report for 3rd March 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.2 °C (+1.8) 05:17 6.0 °C (+2.6) 8.8 °C (+5.4), 2019 -1.9 °C (-5.3), 2013
Maximum Temperature 12.3 °C (+2.7) 14:01 10.0 °C (+0.4) 13.9 °C (+4.3), 2012 3.3 °C (-6.3), 2018
Mean Temperature 8.8 °C (+2.2) 7.8 °C (+1.5) 10.7 °C, 2019 1.8 °C, 2018
Minimum Humidity 75% 16:32 84% 93%, 2021 41%, 2012
Maximum Humidity 91% 07:16 94% 97%, 2021 81%, 2015
Mean Humidity 85% 90% 95%, 2021 63%, 2015
Minimum Pressure 1015 hPa 16:40 1019 hPa 1034 hPa, 2011 982 hPa, 2014
Maximum Pressure 1018 hPa 00:00 1024 hPa 1035 hPa, 2011 993 hPa, 2018
Mean Pressure 1016 hPa 1022 hPa 1034 hPa, 2011 985 hPa, 2014
Mean Wind Speed 2.0 mph (-3.2) 3.8 mph (-1.4) 10.5 mph, 2019 0.3 mph, 2021
Maximum Wind Speed 7.0 mph 12:36 9.4 mph 28.1 mph, 2019 7.0 mph, 2022
Maximum Gust 11.4 mph 16:22 19.8 mph 39.2 mph, 2019 10.3 mph, 2021
Mean Wind Direction SSE
Rainfall 0.2 mm 13.6 mm (360%) 6.5 mm, 2021
Maximum Hourly Rain 0.2 mm 2.9 mm, 2021
Maximum 10-min Rain 0.2 mm 1.2 mm, 2021
Maximum Rain Rate n/a 7.2, 2021
Minimum Dew Point 3.7 °C 05:09 4.6 °C 5.4 °C, 2019 -4.2 °C, 2013
Maximum Dew Point 9.1 °C 12:51 8.2 °C 10.2 °C, 2019 0.9 °C, 2011
Mean Dew Point 6.5 °C 6.2 °C 8.4 °C, 2019 -1.1 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.2 °C 05:17 6.2 °C 9.4 °C, 2019 -1.9 °C, 2013
Day Maximum (09-21) 12.3 °C 14:01 9.2 °C 13.9 °C, 2012 3.1 °C, 2018
Max 10m Temp Rise 0.4 °C 09:51 0.3 °C 0.7 °C, 2014 0.2 °C, 2011
Max 1hr Temp Rise 1.4 °C 09:51 0.8 °C 2.8 °C, 2014 0.5 °C, 2018
Max 1hr Hum Rise 5% 23:09 3% 11%, 2015 2%, 2021
Max 10m Temp Fall 0.3 °C 17:44 0.4 °C 1.2 °C, 2015 0.2 °C, 2010
Max 1hr Temp Fall 1.2 °C 17:54 1.2 °C 2.5 °C, 2012 0.4 °C, 2018
Max 1hr Hum Fall 7% 13:48 5% 27%, 2012 2%, 2021
Max 10m Wind Speed 5.3 mph 16:27 7.6 mph 20.7 mph, 2019 3.7 mph, 2021
Minimum Feels-like 3.9 °C 03:23 2.9 °C 5.3 °C, 2012 -5.8 °C, 2018
Maximum Feels-like 13.0 °C 13:46 10.4 °C 14.0 °C, 2012 1.7 °C, 2011
Mean Feels-like 8.7 °C 6.3 °C 10.6 °C, 2019 -2.5 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 7 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.1 °C (+0.9) 4.0 °C (-2.2) 9.9 °C (+3.7), 2013 3.3 °C (-2.9), 2019
Humidity Range 16% 10% 55%, 2012 4%, 2021
Pressure Range 4 hPa 5 hPa 29 hPa, 2009 1 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]0 hrs (0%) [0%] 6.5 [66%], 2016 0 [0%], 2017
Wet Hours 124 hrs (468%) [33%] 8, 2019 , 2009
Cloud Cover unknown
Events None
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 7.0 °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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