Daily Report for 2nd July 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.6 °C (-0.7) 05:17 13.7 °C (+0.3) 19.3 °C (+6.0), 2010 9.8 °C (-3.5), 2014
Maximum Temperature 21.3 °C (-1.1) 16:46 20.8 °C (-1.7) 29.5 °C (+7.1), 2009 18.0 °C (-4.4), 2013
Mean Temperature 16.0 °C (-0.9) 16.8 °C (-0.7) 22.6 °C, 2018 15.3 °C, 2012
Minimum Humidity 63% 16:46 64% 63%, 2020 27%, 2018
Maximum Humidity 91% 22:59 88% 93%, 2012 63%, 2018
Mean Humidity 81% 79% 81%, 2020 43%, 2018
Minimum Pressure 1009 hPa 00:04 1007 hPa 1025 hPa, 2019 1003 hPa, 2013
Maximum Pressure 1017 hPa 23:46 1013 hPa 1027 hPa, 2019 1014 hPa, 2023
Mean Pressure 1012 hPa 1009 hPa 1026 hPa, 2019 1011 hPa, 2013
Mean Wind Speed 4.9 mph (+0.6) 5.9 mph (+1.6) 9.2 mph, 2016 2.1 mph, 2014
Maximum Wind Speed 13.2 mph 07:55 14.3 mph 21.6 mph, 2016 8.1 mph, 2011
Maximum Gust 19.6 mph 00:50 23.1 mph 37.1 mph, 2016 11.4 mph, 2011
Mean Wind Direction WSW
Rainfall 5.9 mm 7.2 mm (243%) 5.9 mm, 2020
Maximum Hourly Rain 1.8 mm 12:40 1.8 mm, 2020
Maximum 10-min Rain 1.4 mm 17:42 1.4 mm, 2020
Maximum Rain Rate 24 mm/h 17:40 24 mm/h, 2020
Minimum Dew Point 10.0 °C 02:35 10.9 °C 12.1 °C, 2009 4.1 °C, 2025
Maximum Dew Point 15.0 °C 16:13 15.2 °C 18.8 °C, 2009 9.9 °C, 2016
Mean Dew Point 12.7 °C 13.1 °C 15.5 °C, 2009 7.2 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 12.6 °C 05:18 13.7 °C 19.3 °C, 2010 9.8 °C, 2014
Day Maximum (09-21) 21.3 °C 16:46 20.8 °C 29.5 °C, 2009 18.0 °C, 2013
Max 10m Temp Rise 0.7 °C 12:12 0.8 °C 0.9 °C, 2009 0.5 °C, 2010
Max 1hr Temp Rise 2.0 °C 07:44 2.1 °C 3.4 °C, 2009 1.4 °C, 2024
Max 1hr Hum Rise 22% 18:20 17% 22%, 2020 3%, 2010
Max 10m Temp Fall 1.6 °C 17:36 1.2 °C 1.6 °C, 2020 0.3 °C, 2010
Max 1hr Temp Fall 4.0 °C 17:56 2.9 °C 4.0 °C, 2020 1.0 °C, 2013
Max 1hr Hum Fall 12% 01:05 10% 25%, 2025 3%, 2010
Max 10m Wind Speed 10.2 mph 14:23 11.0 mph 16.8 mph, 2016 5.4 mph, 2011
Minimum Feels-like 13.9 °C 04:53 15.4 °C 21.2 °C, 2010 10.0 °C, 2014
Maximum Feels-like 24.8 °C 16:38 24.3 °C 30.7 °C, 2010 18.6 °C, 2013
Mean Feels-like 18.7 °C 19.7 °C 25.8 °C, 2010 15.6 °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 8.7 °C (-0.4) 7.1 °C (-2.0) 14.8 °C (+5.7), 2014 5.2 °C (-3.9), 2013
Humidity Range 28% 25% 56%, 2025 10%, 2010
Pressure Range 8 hPa 6 hPa 12 hPa, 2013 2 hPa, 2014
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4 [27%]7 hrs (54%) [23%] 15.2 [101%], 2018 0 [0%], 2013
Wet Hours 2
[Mean rain rate: 3.0 mm/h]		4 hrs (182%) [8.3%] 6, 2012 0, 2009
Cloud Cover Mostly Cloudy or Mostly Sunny
Events None
Comments Showers
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 2nd 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.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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Wind rose