Daily Report for 6th October 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.9 °C (+1.4) 01:25 10.1 °C (+0.4) 14.9 °C (+5.4), 2015 6.3 °C (-3.2), 2012
Maximum Temperature 15.4 °C (-0.6) 15:36 14.3 °C (-1.9) 20.5 °C (+4.5), 2023 12.3 °C (-3.7), 2018
Mean Temperature 12.9 °C (+0.4) 12.1 °C (-0.7) 16.5 °C, 2023 9.8 °C, 2012
Minimum Humidity 74% 15:45 77% 88%, 2018 43%, 2011
Maximum Humidity 94% 05:24 95% 98%, 2013 69%, 2016
Mean Humidity 85% 89% 93%, 2018 60%, 2016
Minimum Pressure 996 hPa 05:43 988 hPa 1025 hPa, 2013 994 hPa, 2015
Maximum Pressure 1006 hPa 23:58 996 hPa 1030 hPa, 2022 1001 hPa, 2015
Mean Pressure 999 hPa 992 hPa 1028 hPa, 2022 996 hPa, 2015
Mean Wind Speed 4.4 mph (+0.3) 4.7 mph (+0.6) 8.8 mph, 2011 1.9 mph, 2013
Maximum Wind Speed 15.6 mph 15:42 15.5 mph 18.5 mph, 2011 8.5 mph, 2012
Maximum Gust 26.5 mph 12:44 24.6 mph 30.6 mph, 2016 10.9 mph, 2013
Mean Wind Direction WSW
Rainfall 6.3 mm 96.3 mm (765%) 15.2 mm, 2019
Maximum Hourly Rain 3.3 mm 03:47 5.9 mm, 2019
Maximum 10-min Rain 1.1 mm 03:11 2.4 mm, 2015
Maximum Rain Rate 18 mm/h 03:05 42 mm/h, 2015
Minimum Dew Point 9.0 °C 00:53 8.1 °C 13.1 °C, 2015 2.1 °C, 2011
Maximum Dew Point 11.6 °C 13:29 12.2 °C 17.8 °C, 2009 5.7 °C, 2016
Mean Dew Point 10.4 °C 10.2 °C 15.4 °C, 2009 4.5 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.9 °C 01:21 10.4 °C 15.8 °C, 2015 7.3 °C, 2012
Day Maximum (09-21) 15.4 °C 16:05 14.2 °C 20.5 °C, 2023 10.6 °C, 2018
Max 10m Temp Rise 0.5 °C 15:13 0.4 °C 0.9 °C, 2013 0.3 °C, 2010
Max 1hr Temp Rise 1.3 °C 09:43 1.3 °C 4.4 °C, 2013 1.0 °C, 2011
Max 1hr Hum Rise 8% 13:47 7% 10%, 2010 3%, 2018
Max 10m Temp Fall 0.5 °C 13:38 0.4 °C 0.7 °C, 2012 0.2 °C, 2014
Max 1hr Temp Fall 1.1 °C 13:58 1.1 °C 2.8 °C, 2013 0.7 °C, 2024
Max 1hr Hum Fall 8% 15:16 7% 18%, 2010 2%, 2014
Max 10m Wind Speed 9.8 mph 17:05 10.3 mph 13.1 mph, 2021 5.2 mph, 2012
Minimum Feels-like 11.7 °C 01:17 9.5 °C 18.0 °C, 2015 3.7 °C, 2018
Maximum Feels-like 17.4 °C 16:32 16.4 °C 24.5 °C, 2023 13.8 °C, 2018
Mean Feels-like 14.3 °C 13.1 °C 22.2 °C, 2009 8.8 °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 4.5 °C (-2.0) 4.2 °C (-2.3) 10.4 °C (+3.9), 2013 3.4 °C (-3.1), 2024
Humidity Range 20% 18% 49%, 2011 8%, 2018
Pressure Range 10 hPa 8 hPa 17 hPa, 2010 1 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [30%]9.7 hrs (40%) [16%] 9.5 [94%], 2021 0 [0%], 2014
Wet Hours 3.5
[Mean rain rate: 1.8 mm/h]		61 hrs (638%) [42%] 8, 2018 0, 2013
Cloud Cover Partly Cloudy with periods of Mostly Cloudy
Events None
Comments o.night Rain, 13 sh
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 13.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 6th 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