Daily Report for 24th January 2022

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.9 °C (-0.0) 22:28 2.7 °C (-0.4) 9.3 °C (+6.4), 2016 -2.3 °C (-5.2), 2019
Maximum Temperature 5.8 °C (-2.0) 00:13 7.9 °C (+0.1) 14.8 °C (+7.0), 2016 1.1 °C (-6.7), 2021
Mean Temperature 4.2 °C (-1.0) 5.3 °C (-0.1) 12.4 °C, 2016 0.0 °C, 2021
Minimum Humidity 78% 00:20 79% 90%, 2019 61%, 2015
Maximum Humidity 86% 22:43 92% 97%, 2012 86%, 2017
Mean Humidity 82% 87% 93%, 2012 76%, 2009
Minimum Pressure 1033 hPa 04:46 1021 hPa 1033 hPa, 2022 984 hPa, 2009
Maximum Pressure 1036 hPa 22:00 1029 hPa 1036 hPa, 2022 995 hPa, 2009
Mean Pressure 1034 hPa 1025 hPa 1034 hPa, 2022 990 hPa, 2009
Mean Wind Speed 0.2 mph (-5.0) 3.6 mph (-1.6) 10.6 mph, 2018 0.2 mph, 2022
Maximum Wind Speed 5.0 mph 01:28 10.8 mph 24.9 mph, 2018 5.0 mph, 2022
Maximum Gust 8.0 mph 01:23 18.2 mph 46.1 mph, 2018 7.3 mph, 2017
Mean Wind Direction SSW
Rainfall 0.0 mm 15.4 mm (34%) 11.4 mm, 2018
Maximum Hourly Rain n/a 5.7, 2018
Maximum 10-min Rain n/a 2.6, 2018
Maximum Rain Rate n/a 53, 2018
Minimum Dew Point 0.6 °C 22:28 0.8 °C 8.0 °C, 2016 -4.8 °C, 2013
Maximum Dew Point 2.5 °C 01:04 5.6 °C 13.2 °C, 2016 -0.9 °C, 2013
Mean Dew Point 1.4 °C 3.2 °C 11.7 °C, 2016 -2.2 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 3.9 °C * 08:56 3.4 °C 10.8 °C, 2018 -2.3 °C, 2019
Day Maximum (09-21) * 4.2 °C * 15:00 7.8 °C 12.8 °C, 2018 1.1 °C, 2021
Max 10m Temp Rise 0.2 °C 22:45 0.4 °C 0.5 °C, 2017 0.1 °C, 2013
Max 1hr Temp Rise 0.3 °C 23:19 1.3 °C 1.8 °C, 2017 0.3 °C, 2013
Max 1hr Hum Rise 2% 01:04 4% 8%, 2018 1%, 2020
Max 10m Temp Fall 0.2 °C 04:17 0.4 °C 1.8 °C, 2018 0.2 °C, 2010
Max 1hr Temp Fall 0.4 °C 04:54 1.3 °C 3.6 °C, 2018 0.3 °C, 2020
Max 1hr Hum Fall 2% 11:02 5% 11%, 2016 1%, 2012
Max 10m Wind Speed 2.0 mph 12:51 8.2 mph 20.0 mph, 2018 2.0 mph, 2022
Minimum Feels-like 0.5 °C 23:55 -0.5 °C 8.0 °C, 2016 -5.9 °C, 2019
Maximum Feels-like 5.8 °C 00:04 7.8 °C 14.6 °C, 2018 1.1 °C, 2021
Mean Feels-like 4.0 °C 4.0 °C 15.2 °C, 2016 -1.3 °C, 2021
Air-frost Hrs 0 hrs 0.9 hrs 10 hrs, 2021 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.9 °C (-1.9) 5.3 °C (+0.5) 7.8 °C (+3.0), 2012 1.6 °C (-3.2), 2020
Humidity Range 8% 14% 35%, 2015 3%, 2016
Pressure Range 3 hPa 8 hPa 16 hPa, 2015 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]69 hrs (130%) [39%] 7.7 [99%], 2015 0 [0%], 2010
Wet Hours 019 hrs (36%) [3.2%] 8, 2012 , 2009
Cloud Cover Overcast
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose