Daily Report for 28th October 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.1 °C (+0.8) 22:42 8.6 °C (-0.0) 12.6 °C (+5.3), 2022 1.6 °C (-5.7), 2012
Maximum Temperature 12.9 °C (-0.2) 12:22 14.0 °C (-0.8) 18.2 °C (+5.1), 2022 9.1 °C (-4.0), 2012
Mean Temperature 9.6 °C (+0.3) 11.2 °C (-0.4) 15.8 °C, 2022 5.7 °C, 2018
Minimum Humidity 72% 14:35 74% 89%, 2024 55%, 2018
Maximum Humidity 89% 00:17 93% 98%, 2013 80%, 2016
Mean Humidity 84% 86% 93%, 2024 76%, 2025
Minimum Pressure 1001 hPa 03:16 1005 hPa 1032 hPa, 2016 979 hPa, 2013
Maximum Pressure 1010 hPa 23:46 1012 hPa 1037 hPa, 2016 992 hPa, 2023
Mean Pressure 1004 hPa 1008 hPa 1034 hPa, 2016 989 hPa, 2023
Mean Wind Speed 4.8 mph (+0.7) 3.7 mph (-0.4) 9.6 mph, 2013 2.0 mph, 2019
Maximum Wind Speed 16.4 mph 14:17 13.3 mph 31.1 mph, 2013 6.6 mph, 2019
Maximum Gust 31.1 mph 14:28 21.8 mph 50.0 mph, 2013 9.8 mph, 2009
Mean Wind Direction SW
Rainfall 1.0 mm 154.3 mm (263%) 15.2 mm, 2013
Maximum Hourly Rain 0.7 mm 15:35 6.7 mm, 2015
Maximum 10-min Rain 0.5 mm 15:35 3.0 mm, 2015
Maximum Rain Rate 7 mm/h 15:27 66 mm/h, 2015
Minimum Dew Point 5.7 °C 22:22 6.7 °C 10.4 °C, 2022 -0.3 °C, 2012
Maximum Dew Point 8.8 °C 12:42 11.0 °C 15.4 °C, 2022 5.6 °C, 2018
Mean Dew Point 7.0 °C 8.9 °C 13.1 °C, 2022 2.9 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 7.5 °C * 23:52 8.9 °C 14.1 °C, 2022 1.6 °C, 2012
Day Maximum (09-21) 12.9 °C 12:22 14.0 °C 18.2 °C, 2022 9.1 °C, 2012
Max 10m Temp Rise 0.4 °C 08:17 0.4 °C 1.0 °C, 2018 0.3 °C, 2010
Max 1hr Temp Rise 1.4 °C 09:01 1.5 °C 2.6 °C, 2017 0.8 °C, 2015
Max 1hr Hum Rise 12% 16:21 6% 16%, 2018 3%, 2012
Max 10m Temp Fall 1.4 °C 15:31 0.5 °C 1.7 °C, 2009 0.2 °C, 2010
Max 1hr Temp Fall 3.4 °C 16:11 1.3 °C 3.4 °C, 2020 0.3 °C, 2024
Max 1hr Hum Fall 5% 10:58 7% 18%, 2013 2%, 2024
Max 10m Wind Speed 7.1 mph 14:33 8.7 mph 25.1 mph, 2013 5.0 mph, 2019
Minimum Feels-like 4.7 °C 04:59 7.0 °C 14.3 °C, 2022 -2.8 °C, 2012
Maximum Feels-like 13.6 °C 12:36 15.5 °C 21.7 °C, 2022 8.5 °C, 2018
Mean Feels-like 9.6 °C 11.7 °C 18.7 °C, 2022 2.8 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.8 °C (-0.9) 5.4 °C (-0.8) 9.9 °C (+4.2), 2017 3.0 °C (-2.7), 2021
Humidity Range 17% 19% 38%, 2013 7%, 2024
Pressure Range 8 hPa 7 hPa 23 hPa, 2013 2 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2.8 [32%]69 hrs (64%) [26%] 7 [79%], 2014 0.1 [1%], 2024
Wet Hours 1.5
[Mean rain rate: 0.7 mm/h]		121 hrs (272%) [18%] 7, 2013 0, 2009
Cloud Cover Partly Cloudy
Events None
Comments pm Showers
Extra Comments
Issues wind sensor not reporting properly - v low speeds
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 10.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 28th 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

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose