Daily Report for 14th July 2020

<<Previous Day
Reset 		Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 14.8 °C (+0.5) 23:57 12.7 °C (-1.2) 17.6 °C (+3.3), 2025 11.7 °C (-2.6), 2011
Maximum Temperature 20.8 °C (-2.3) 13:29 20.9 °C (-1.9) 28.2 °C (+5.1), 2013 16.9 °C (-6.2), 2012
Mean Temperature 17.9 °C (-0.9) 16.9 °C (-1.6) 23.2 °C, 2013 14.6 °C, 2012
Minimum Humidity 59% 13:39 56% 73%, 2023 34%, 2011
Maximum Humidity 92% 05:09 90% 95%, 2018 72%, 2011
Mean Humidity 75% 74% 88%, 2012 56%, 2011
Minimum Pressure 1016 hPa 18:11 1015 hPa 1023 hPa, 2019 999 hPa, 2012
Maximum Pressure 1020 hPa 00:01 1020 hPa 1026 hPa, 2022 1007 hPa, 2010
Mean Pressure 1017 hPa 1017 hPa 1024 hPa, 2019 1004 hPa, 2010
Mean Wind Speed 2.6 mph (-1.7) 5.6 mph (+1.3) 7.9 mph, 2025 1.4 mph, 2024
Maximum Wind Speed 8.1 mph 16:05 14.5 mph 18.2 mph, 2025 7.8 mph, 2013
Maximum Gust 11.5 mph 00:04 22.8 mph 27.0 mph, 2009 10.2 mph, 2013
Mean Wind Direction NW
Rainfall 1.0 mm 26.9 mm (129%) 7.2 mm, 2023
Maximum Hourly Rain 0.7 mm 01:24 2.9 mm, 2019
Maximum 10-min Rain 0.4 mm 00:51 2.0 mm, 2012
Maximum Rain Rate 7 mm/h 00:51 30 mm/h, 2012
Minimum Dew Point 9.9 °C 23:52 9.3 °C 14.3 °C, 2015 5.3 °C, 2011
Maximum Dew Point 14.9 °C 09:53 14.2 °C 17.5 °C, 2023 10.0 °C, 2011
Mean Dew Point 13.1 °C 11.9 °C 15.2 °C, 2015 7.5 °C, 2011
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 15.4 °C * 05:30 13.0 °C 18.7 °C, 2025 11.7 °C, 2011
Day Maximum (09-21) 20.8 °C 13:29 20.9 °C 28.2 °C, 2013 15.7 °C, 2012
Max 10m Temp Rise 0.6 °C 09:52 0.6 °C 0.7 °C, 2014 0.3 °C, 2023
Max 1hr Temp Rise 2.1 °C 10:06 2.2 °C 2.9 °C, 2018 1.0 °C, 2023
Max 1hr Hum Rise 5% 01:38 11% 13%, 2023 5%, 2020
Max 10m Temp Fall 0.4 °C 14:14 0.7 °C 0.7 °C, 2016 0.4 °C, 2014
Max 1hr Temp Fall 1.4 °C 23:52 2.2 °C 2.8 °C, 2016 1.1 °C, 2023
Max 1hr Hum Fall 12% 10:13 11% 13%, 2018 7%, 2015
Max 10m Wind Speed 5.8 mph 00:43 10.8 mph 13.9 mph, 2025 5.4 mph, 2013
Minimum Feels-like 16.1 °C 23:57 13.8 °C 20.4 °C, 2015 11.7 °C, 2011
Maximum Feels-like 23.9 °C 13:24 23.6 °C 31.2 °C, 2013 19.6 °C, 2012
Mean Feels-like 20.7 °C 19.2 °C 26.3 °C, 2013 16.8 °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 6.0 °C (-2.8) 8.3 °C (-0.7) 13.0 °C (+4.2), 2018 3.1 °C (-5.7), 2023
Humidity Range 33% 34% 53%, 2018 21%, 2015
Pressure Range 4 hPa 6 hPa 16 hPa, 2023 1 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [7%]66 hrs (73%) [32%] 12 [81%], 2022 0 [0%], 2023
Wet Hours 2
[Mean rain rate: 0.5 mm/h]		35 hrs (228%) [10%] 8, 2012 0, 2011
Cloud Cover Overcast with periods of Mostly Cloudy
Events None
Comments o.night Rain
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 5.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 14th July 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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose