Daily Report for 8th February 2023

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -2.7 °C (-5.7) 07:25 2.9 °C (-0.1) 9.9 °C (+6.9), 2022 -3.2 °C (-6.2), 2012
Maximum Temperature 7.5 °C (-0.4) 14:45 9.5 °C (+1.7) 12.3 °C (+4.4), 2022 -1.2 °C (-9.1), 2021
Mean Temperature 1.9 °C (-3.0) 6.0 °C (+0.8) 11.0 °C, 2022 -1.8 °C, 2021
Minimum Humidity 51% 14:46 68% 83%, 2010 51%, 2023
Maximum Humidity 97% 10:08 93% 97%, 2023 82%, 2012
Mean Humidity 84% 84% 91%, 2010 72%, 2016
Minimum Pressure 1032 hPa 23:57 1033 hPa 1039 hPa, 2012 976 hPa, 2014
Maximum Pressure 1039 hPa 00:12 1038 hPa 1042 hPa, 2012 987 hPa, 2014
Mean Pressure 1035 hPa 1036 hPa 1040 hPa, 2012 978 hPa, 2014
Mean Wind Speed 2.4 mph (-2.7) 4.4 mph (-0.7) 13.2 mph, 2016 2.3 mph, 2017
Maximum Wind Speed 10.5 mph 14:08 11.7 mph 32.1 mph, 2019 7.9 mph, 2017
Maximum Gust 12.7 mph 14:09 17.3 mph 45.1 mph, 2014 10.5 mph, 2011
Mean Wind Direction SW
Rainfall 0.0 mm 0.0 mm (0%) 5.0 mm, 2009
Maximum Hourly Rain n/a 2, 2009
Maximum 10-min Rain n/a 1.2, 2014
Maximum Rain Rate n/a 36, 2014
Minimum Dew Point -3.6 °C 04:24 1.2 °C 6.2 °C, 2022 -8.3 °C, 2012
Maximum Dew Point 1.7 °C 12:03 5.7 °C 9.0 °C, 2019 -3.2 °C, 2012
Mean Dew Point -0.7 °C 3.4 °C 7.2 °C, 2022 -4.7 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) -2.7 °C 07:20 3.2 °C 9.9 °C, 2022 -3.9 °C, 2012
Day Maximum (09-21) 7.5 °C 14:45 9.5 °C 12.3 °C, 2022 -1.2 °C, 2021
Max 10m Temp Rise 0.7 °C 09:48 0.6 °C 0.8 °C, 2009 0.2 °C, 2012
Max 1hr Temp Rise 2.6 °C 10:17 1.8 °C 2.6 °C, 2023 0.2 °C, 2010
Max 1hr Hum Rise 15% 15:47 7% 15%, 2023 2%, 2010
Max 10m Temp Fall 0.3 °C 16:59 0.4 °C 0.6 °C, 2009 0.2 °C, 2012
Max 1hr Temp Fall 1.0 °C 17:32 1.4 °C 1.7 °C, 2015 0.4 °C, 2012
Max 1hr Hum Fall 20% 12:38 10% 20%, 2014 2%, 2012
Max 10m Wind Speed 7.6 mph 14:17 8.8 mph 21.9 mph, 2016 6.0 mph, 2011
Minimum Feels-like -3.7 °C 02:12 -0.1 °C 6.6 °C, 2022 -10.6 °C, 2021
Maximum Feels-like 6.3 °C 13:56 9.4 °C 12.6 °C, 2022 -3.4 °C, 2021
Mean Feels-like 0.6 °C 4.6 °C 11.0 °C, 2022 -7.6 °C, 2021
Air-frost Hrs 10 hrs 2 hrs 24 hrs, 2021 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.2 °C (+5.3) 6.6 °C (+1.7) 10.2 °C (+5.3), 2023 1.4 °C (-3.5), 2021
Humidity Range 46% 24% 46%, 2023 9%, 2019
Pressure Range 8 hPa 5 hPa 16 hPa, 2019 2 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 8 [94%]33 hrs (157%) [49%] 8 [94%], 2023 0 [0%], 2010
Wet Hours 00 hrs (0%) [0%] 6, 2019 , 2009
Cloud Cover unknown
Events Air Frost
Comments blr
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 4.0 °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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