Daily Report for 23rd October 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.2 °C (+1.3) 23:54 8.8 °C (-0.1) 13.1 °C (+5.2), 2022 4.1 °C (-3.8), 2019
Maximum Temperature 15.4 °C (+1.6) 13:58 14.1 °C (-1.0) 18.7 °C (+4.9), 2011 11.6 °C (-2.2), 2010
Mean Temperature 12.8 °C (+1.5) 11.4 °C (-0.5) 14.9 °C, 2022 9.2 °C, 2019
Minimum Humidity 73% 15:32 74% 98%, 2012 48%, 2011
Maximum Humidity 94% 06:57 94% 98%, 2009 85%, 2016
Mean Humidity 85% 86% 98%, 2012 72%, 2011
Minimum Pressure 1007 hPa 13:48 1007 hPa 1029 hPa, 2018 990 hPa, 2013
Maximum Pressure 1011 hPa 23:21 1014 hPa 1037 hPa, 2018 1010 hPa, 2009
Mean Pressure 1009 hPa 1010 hPa 1031 hPa, 2018 998 hPa, 2013
Mean Wind Speed 4.2 mph (+0.1) 3.5 mph (-0.6) 7.3 mph, 2013 1.3 mph, 2019
Maximum Wind Speed 14.4 mph 14:48 12.9 mph 20.6 mph, 2013 7.1 mph, 2012
Maximum Gust 23.0 mph 14:36 20.8 mph 32.3 mph, 2022 10.0 mph, 2012
Mean Wind Direction SW
Rainfall 0.0 mm 140.3 mm (291%) 30.2 mm, 2022
Maximum Hourly Rain n/a 8.8, 2022
Maximum 10-min Rain n/a 4.6, 2022
Maximum Rain Rate n/a 96, 2022
Minimum Dew Point 6.6 °C 23:29 6.9 °C 11.6 °C, 2012 3.2 °C, 2019
Maximum Dew Point 12.3 °C 13:20 11.0 °C 16.0 °C, 2022 7.1 °C, 2016
Mean Dew Point 10.3 °C 9.1 °C 13.6 °C, 2022 5.5 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 11.7 °C * 00:28 9.2 °C 13.8 °C, 2022 4.1 °C, 2019
Day Maximum (09-21) 15.4 °C 14:01 14.1 °C 18.7 °C, 2011 11.6 °C, 2010
Max 10m Temp Rise 0.4 °C 10:11 0.4 °C 1.1 °C, 2009 0.2 °C, 2012
Max 1hr Temp Rise 1.1 °C 10:21 1.5 °C 3.2 °C, 2009 0.5 °C, 2012
Max 1hr Hum Rise 7% 17:03 7% 12%, 2009 0%, 2012
Max 10m Temp Fall 0.4 °C 20:36 0.4 °C 2.1 °C, 2022 0.1 °C, 2014
Max 1hr Temp Fall 1.4 °C 21:19 1.2 °C 4.2 °C, 2022 0.3 °C, 2017
Max 1hr Hum Fall 6% 14:20 8% 23%, 2009 0%, 2012
Max 10m Wind Speed 11.6 mph 16:11 8.6 mph 15.6 mph, 2022 4.5 mph, 2012
Minimum Feels-like 7.2 °C 23:51 7.4 °C 15.4 °C, 2022 1.4 °C, 2019
Maximum Feels-like 17.7 °C 13:26 15.7 °C 22.7 °C, 2022 12.0 °C, 2010
Mean Feels-like 14.3 °C 12.0 °C 18.1 °C, 2022 8.7 °C, 2016
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.2 °C (+0.3) 5.4 °C (-0.9) 10.0 °C (+4.1), 2019 1.9 °C (-4.0), 2012
Humidity Range 21% 20% 45%, 2011 0%, 2012
Pressure Range 4 hPa 7 hPa 21 hPa, 2013 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [22%]56 hrs (63%) [25%] 7.5 [82%], 2011 0 [0%], 2012
Wet Hours 0103 hrs (282%) [19%] 8, 2022 0, 2009
Cloud Cover am: Partly Cloudy transitioned to Overcast
pm: Mostly Cloudy
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 10.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 23rd October 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