Daily Report for 1st March 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.8 °C (+3.4) 22:57 6.8 °C (+3.4) 8.0 °C (+4.6), 2019 -4.8 °C (-8.2), 2018
Maximum Temperature 10.1 °C (+0.6) 00:25 10.1 °C (+0.5) 14.4 °C (+4.9), 2012 0.0 °C (-9.5), 2018
Mean Temperature 7.8 °C (+2.0) 7.8 °C (+2.0) 9.9 °C, 2012 -2.8 °C, 2018
Minimum Humidity 91% 03:57 91% 91%, 2022 47%, 2015
Maximum Humidity 95% 23:37 95% 98%, 2014 84%, 2017
Mean Humidity 94% 94% 94%, 2022 68%, 2015
Minimum Pressure 1025 hPa 23:52 1025 hPa 1035 hPa, 2011 988 hPa, 2020
Maximum Pressure 1028 hPa 11:29 1028 hPa 1039 hPa, 2011 991 hPa, 2020
Mean Pressure 1026 hPa 1026 hPa 1037 hPa, 2011 990 hPa, 2020
Mean Wind Speed 5.4 mph (+0.2) 5.4 mph (+0.2) 12.5 mph, 2018 1.9 mph, 2014
Maximum Wind Speed 12.3 mph 06:50 12.3 mph 22.0 mph, 2018 7.1 mph, 2012
Maximum Gust 24.0 mph 06:43 24.0 mph 33.4 mph, 2018 8.7 mph, 2012
Mean Wind Direction NE
Rainfall 9.1 mm 9.1 mm (723%) 9.1 mm, 2022
Maximum Hourly Rain 1.7 mm 22:46 3.2 mm, 2015
Maximum 10-min Rain 0.5 mm 03:58 2.6 mm, 2015
Maximum Rain Rate 2.4 mm/h 22:46 30 mm/h, 2015
Minimum Dew Point 5.8 °C 18:57 5.8 °C 5.8 °C, 2022 -8.4 °C, 2018
Maximum Dew Point 9.0 °C 03:28 9.0 °C 10.7 °C, 2016 -3.6 °C, 2018
Mean Dew Point 6.8 °C 6.8 °C 6.8 °C, 2022 -5.8 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 7.4 °C * 08:58 7.4 °C 8.1 °C, 2019 -5.1 °C, 2018
Day Maximum (09-21) * 7.8 °C * 12:31 7.8 °C 14.4 °C, 2012 0.0 °C, 2018
Max 10m Temp Rise 0.2 °C 10:54 0.2 °C 0.6 °C, 2011 0.2 °C, 2022
Max 1hr Temp Rise 0.4 °C 10:54 0.4 °C 2.1 °C, 2010 0.4 °C, 2011
Max 1hr Hum Rise 2% 04:55 2% 21%, 2015 2%, 2022
Max 10m Temp Fall 0.8 °C 04:00 0.8 °C 0.8 °C, 2015 0.2 °C, 2013
Max 1hr Temp Fall 2.0 °C 04:37 2.0 °C 2.4 °C, 2015 0.7 °C, 2013
Max 1hr Hum Fall 2% 03:55 2% 24%, 2015 2%, 2022
Max 10m Wind Speed 10.3 mph 03:47 10.3 mph 18.1 mph, 2015 5.7 mph, 2014
Minimum Feels-like 2.7 °C 06:43 2.7 °C 5.0 °C, 2012 -14.2 °C, 2018
Maximum Feels-like 10.9 °C 00:25 10.9 °C 14.6 °C, 2012 -5.7 °C, 2018
Mean Feels-like 5.5 °C 5.5 °C 9.8 °C, 2012 -10.1 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 24 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.3 °C (-2.8) 3.3 °C (-2.9) 9.5 °C (+3.4), 2010 1.9 °C (-4.2), 2011
Humidity Range 4% 4% 49%, 2015 4%, 2022
Pressure Range 3 hPa 3 hPa 21 hPa, 2016 3 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]0 hrs (0%) [0%] 9 [92%], 2012 0 [0%], 2011
Wet Hours 14
[Mean rain rate: 0.7 mm/h]
14 hrs (819%) [58%] 14, 2022 , 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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Webcam Summary of Cloud Conditions

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