Daily Report for 14th November 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.0 °C (+4.5) 03:53 7.4 °C (+1.3) 10.0 °C (+4.5), 2020 3.9 °C (-1.6), 2019
Maximum Temperature 14.1 °C (+3.6) 18:22 13.3 °C (+2.1) 15.4 °C (+4.9), 2009 8.2 °C (-2.3), 2019
Mean Temperature 12.6 °C (+4.0) 10.4 °C (+1.7) 12.6 °C, 2020 5.7 °C, 2019
Minimum Humidity 81% 02:37 76% 92%, 2011 62%, 2013
Maximum Humidity 94% 06:49 94% 98%, 2011 81%, 2016
Mean Humidity 89% 87% 96%, 2022 76%, 2013
Minimum Pressure 1002 hPa 23:56 1014 hPa 1026 hPa, 2016 988 hPa, 2009
Maximum Pressure 1015 hPa 00:06 1024 hPa 1031 hPa, 2016 1001 hPa, 2014
Mean Pressure 1008 hPa 1019 hPa 1029 hPa, 2016 996 hPa, 2019
Mean Wind Speed 8.1 mph (+3.5) 3.8 mph (-0.8) 9.9 mph, 2009 1.8 mph, 2022
Maximum Wind Speed 19.2 mph 11:17 10.3 mph 24.5 mph, 2009 6.7 mph, 2012
Maximum Gust 26.2 mph 11:32 18.1 mph 38.5 mph, 2009 9.4 mph, 2012
Mean Wind Direction SSW
Rainfall 5.3 mm 17.4 mm (56%) 12.4 mm, 2023
Maximum Hourly Rain 1.3 mm 14:12 7.5 mm, 2014
Maximum 10-min Rain 0.5 mm 08:11 2.4 mm, 2023
Maximum Rain Rate 18 mm/h 11:29 24 mm/h, 2014
Minimum Dew Point 7.2 °C 00:25 5.6 °C 8.1 °C, 2022 0.6 °C, 2013
Maximum Dew Point 12.5 °C 08:24 10.8 °C 12.7 °C, 2015 5.4 °C, 2019
Mean Dew Point 10.8 °C 8.4 °C 10.8 °C, 2020 3.5 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.0 °C 03:53 8.2 °C 11.3 °C, 2014 4.1 °C, 2017
Day Maximum (09-21) 14.1 °C 14:39 13.3 °C 14.1 °C, 2020 8.2 °C, 2019
Max 10m Temp Rise 0.4 °C 06:01 0.5 °C 0.5 °C, 2009 0.1 °C, 2011
Max 1hr Temp Rise 1.5 °C 06:44 1.5 °C 1.9 °C, 2009 0.4 °C, 2011
Max 1hr Hum Rise 7% 03:45 5% 10%, 2009 1%, 2011
Max 10m Temp Fall 0.3 °C 03:20 0.5 °C 1.2 °C, 2023 0.0 °C, 2016
Max 1hr Temp Fall 0.8 °C 21:38 1.4 °C 2.4 °C, 2014 0.0 °C, 2016
Max 1hr Hum Fall 5% 20:44 7% 19%, 2009 1%, 2015
Max 10m Wind Speed 13.8 mph 11:22 5.4 mph 17.2 mph, 2009 5.0 mph, 2012
Minimum Feels-like 10.2 °C 00:04 6.8 °C 10.2 °C, 2018 0.5 °C, 2019
Maximum Feels-like 16.5 °C 10:46 15.0 °C 17.1 °C, 2009 8.2 °C, 2019
Mean Feels-like 14.3 °C 11.4 °C 14.3 °C, 2020 3.9 °C, 2019
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.1 °C (-0.9) 5.9 °C (+0.8) 8.5 °C (+3.5), 2016 1.7 °C (-3.3), 2011
Humidity Range 13% 18% 26%, 2013 2%, 2016
Pressure Range 13 hPa 10 hPa 17 hPa, 2009 3 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]44 hrs (108%) [38%] 7.5 [94%], 2018 0 [0%], 2010
Wet Hours 10
[Mean rain rate: 0.5 mm/h]
25 hrs (85%) [7.4%] 10, 2015 0, 2011
Cloud Cover Overcast
Events None
Comments rn
Extra Comments
Issues wind from harpenden
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 10.5 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 14th November 2020.
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 derived based on analysis of webcam observations, but may use data from our closest site, Heathrow, when needed.
Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually.
Rainfall totals may be manually adjusted after the fact to correct delayed or erroneous data.
Cloud cover and Events are manually reported, often with multi-week delays.
Data is generally reliable and accurate but should always be viewed with some quantity of salt to hand.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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Wind rose