Daily Report for 10th October 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.3 °C (-3.9) 06:11 8.8 °C (-0.7) 15.8 °C (+6.6), 2011 4.9 °C (-4.3), 2012
Maximum Temperature 13.2 °C (-2.3) 15:35 14.5 °C (-1.5) 22.7 °C (+7.2), 2023 11.7 °C (-3.8), 2013
Mean Temperature 8.9 °C (-3.1) 11.7 °C (-1.1) 17.8 °C, 2023 8.8 °C, 2013
Minimum Humidity 76% 15:36 75% 77%, 2017 47%, 2010
Maximum Humidity 92% 23:56 94% 98%, 2009 73%, 2013
Mean Humidity 86% 87% 88%, 2021 66%, 2013
Minimum Pressure 1022 hPa 00:04 998 hPa 1029 hPa, 2021 1005 hPa, 2014
Maximum Pressure 1024 hPa 23:43 1006 hPa 1032 hPa, 2021 1011 hPa, 2014
Mean Pressure 1023 hPa 1002 hPa 1030 hPa, 2021 1009 hPa, 2014
Mean Wind Speed 4.6 mph (+0.5) 4.3 mph (+0.2) 10.8 mph, 2011 1.8 mph, 2021
Maximum Wind Speed 12.9 mph 12:58 14.8 mph 21.5 mph, 2011 8.8 mph, 2021
Maximum Gust 20.7 mph 12:17 23.4 mph 37.7 mph, 2011 12.5 mph, 2021
Mean Wind Direction W
Rainfall 0.8 mm 110.0 mm (525%) 4.6 mm, 2022
Maximum Hourly Rain 0.7 mm 23:01 4.4 mm, 2022
Maximum 10-min Rain 0.7 mm 23:01 2.8 mm, 2014
Maximum Rain Rate 7 mm/h 22:57 48 mm/h, 2014
Minimum Dew Point 3.8 °C 06:06 7.1 °C 12.2 °C, 2023 1.7 °C, 2013
Maximum Dew Point 9.2 °C 16:34 11.9 °C 16.9 °C, 2023 4.5 °C, 2013
Mean Dew Point 6.6 °C 9.6 °C 14.7 °C, 2023 2.8 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.3 °C 06:11 9.5 °C 15.8 °C, 2011 4.9 °C, 2012
Day Maximum (09-21) 13.2 °C 15:35 14.4 °C 22.7 °C, 2023 11.7 °C, 2013
Max 10m Temp Rise 0.4 °C 10:35 0.4 °C 0.9 °C, 2012 0.3 °C, 2017
Max 1hr Temp Rise 1.6 °C 11:26 1.5 °C 3.8 °C, 2012 1.0 °C, 2017
Max 1hr Hum Rise 4% 16:52 7% 15%, 2014 3%, 2017
Max 10m Temp Fall 0.3 °C 23:04 0.4 °C 1.1 °C, 2014 0.2 °C, 2015
Max 1hr Temp Fall 0.9 °C 18:02 1.2 °C 3.0 °C, 2022 0.7 °C, 2017
Max 1hr Hum Fall 5% 12:17 8% 24%, 2010 5%, 2017
Max 10m Wind Speed 8.6 mph 15:29 10.1 mph 14.6 mph, 2011 5.9 mph, 2021
Minimum Feels-like 1.4 °C 06:52 7.6 °C 18.1 °C, 2011 1.4 °C, 2020
Maximum Feels-like 14.1 °C 15:26 16.4 °C 27.8 °C, 2023 11.7 °C, 2013
Mean Feels-like 7.8 °C 12.4 °C 21.6 °C, 2023 7.2 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.9 °C (+1.5) 5.7 °C (-0.8) 11.7 °C (+5.3), 2018 3.7 °C (-2.7), 2011
Humidity Range 16% 20% 49%, 2010 15%, 2017
Pressure Range 2 hPa 8 hPa 16 hPa, 2022 2 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1.5 [15%]22 hrs (55%) [22%] 10 [101%], 2018 0.5 [5%], 2015
Wet Hours 1
[Mean rain rate: 0.8 mm/h]
71 hrs (446%) [29%] 2, 2022 0, 2010
Cloud Cover am: Hazy
pm: Overcast transitioned to Partly Cloudy
Events None
Comments late sh
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 12.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 10th 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