Daily Report for 26th October 2019

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.6 °C (-1.1) 23:26 8.8 °C (+0.0) 14.0 °C (+6.3), 2013 1.4 °C (-6.2), 2010
Maximum Temperature 16.4 °C (+2.9) 12:51 14.9 °C (-0.2) 19.1 °C (+5.6), 2022 9.3 °C (-4.2), 2012
Mean Temperature 13.4 °C (+0.9) 12.0 °C (-0.1) 16.4 °C, 2022 7.4 °C, 2012
Minimum Humidity 79% 12:21 73% 92%, 2017 60%, 2009
Maximum Humidity 94% 17:13 94% 98%, 2017 75%, 2014
Mean Humidity 87% 87% 96%, 2017 69%, 2014
Minimum Pressure 1005 hPa 14:56 1005 hPa 1023 hPa, 2017 991 hPa, 2023
Maximum Pressure 1017 hPa 23:42 1014 hPa 1031 hPa, 2016 996 hPa, 2023
Mean Pressure 1009 hPa 1010 hPa 1028 hPa, 2016 992 hPa, 2023
Mean Wind Speed 9.2 mph (+5.1) 4.7 mph (+0.6) 9.2 mph, 2019 0.6 mph, 2024
Maximum Wind Speed 21.7 mph 09:16 14.6 mph 21.7 mph, 2019 4.5 mph, 2024
Maximum Gust 36.9 mph 01:07 22.2 mph 36.9 mph, 2019 8.1 mph, 2024
Mean Wind Direction WSW
Rainfall 3.7 mm 91.2 mm (167%) 5.0 mm, 2023
Maximum Hourly Rain 1.1 mm 15:00 2.4 mm, 2023
Maximum 10-min Rain 0.7 mm 17:34 0.7 mm, 2018
Maximum Rain Rate 7 mm/h 17:34 13 mm/h, 2020
Minimum Dew Point 5.2 °C 23:31 7.3 °C 12.2 °C, 2022 -0.5 °C, 2010
Maximum Dew Point 14.2 °C 17:19 12.1 °C 15.1 °C, 2022 6.6 °C, 2012
Mean Dew Point 11.2 °C 9.7 °C 13.5 °C, 2022 4.0 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 14.9 °C * 01:26 9.6 °C 14.9 °C, 2019 1.4 °C, 2010
Day Maximum (09-21) 16.4 °C 12:50 14.9 °C 19.1 °C, 2022 8.6 °C, 2012
Max 10m Temp Rise 0.3 °C 01:48 0.4 °C 1.2 °C, 2009 0.2 °C, 2012
Max 1hr Temp Rise 0.9 °C 02:24 1.6 °C 2.8 °C, 2016 0.5 °C, 2012
Max 1hr Hum Rise 8% 13:50 8% 12%, 2012 3%, 2024
Max 10m Temp Fall 2.3 °C 17:43 0.6 °C 2.3 °C, 2019 0.1 °C, 2010
Max 1hr Temp Fall 7.4 °C 18:25 1.8 °C 7.4 °C, 2019 0.4 °C, 2010
Max 1hr Hum Fall 8% 17:35 9% 14%, 2009 2%, 2017
Max 10m Wind Speed 15.2 mph 13:41 10.4 mph 15.3 mph, 2022 2.9 mph, 2024
Minimum Feels-like 3.3 °C 20:28 8.1 °C 16.3 °C, 2022 -2.4 °C, 2012
Maximum Feels-like 19.2 °C 13:12 16.9 °C 22.4 °C, 2022 7.9 °C, 2012
Mean Feels-like 15.1 °C 13.2 °C 19.4 °C, 2022 4.5 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.8 °C (+4.0) 6.1 °C (-0.2) 11.7 °C (+5.9), 2010 2.8 °C (-3.0), 2013
Humidity Range 15% 21% 31%, 2009 6%, 2017
Pressure Range 12 hPa 8 hPa 24 hPa, 2016 3 hPa, 2024
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]66 hrs (66%) [26%] 7 [78%], 2009 0 [0%], 2010
Wet Hours 6
[Mean rain rate: 0.6 mm/h]		84 hrs (204%) [13%] 7, 2010 0, 2009
Cloud Cover Overcast
Events None
Comments pm rn
Extra Comments huge temp drop at the cold front
Issues None known
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 26th October 2019.
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

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose