Daily Report for 2nd February 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.3 °C (+7.3) 07:33 9.6 °C (+6.6) 10.3 °C (+7.3), 2017 -3.1 °C (-6.1), 2009
Maximum Temperature 11.6 °C (+3.7) 15:44 11.6 °C (+3.6) 13.0 °C (+5.1), 2020 0.2 °C (-7.7), 2009
Mean Temperature 10.9 °C (+5.5) 10.9 °C (+5.1) 10.9 °C, 2017 -1.4 °C, 2009
Minimum Humidity 78% 17:08 80% 87%, 2009 41%, 2012
Maximum Humidity 85% 03:46 85% 98%, 2011 65%, 2012
Mean Humidity 81% 82% 93%, 2010 54%, 2012
Minimum Pressure 993 hPa 15:27 998 hPa 1035 hPa, 2012 991 hPa, 2009
Maximum Pressure 1002 hPa 23:53 1006 hPa 1038 hPa, 2012 1001 hPa, 2021
Mean Pressure 996 hPa 1001 hPa 1036 hPa, 2012 996 hPa, 2021
Mean Wind Speed 8.8 mph (+3.7) 7.0 mph (+1.9) 10.1 mph, 2024 2.5 mph, 2025
Maximum Wind Speed 18.3 mph 20:08 15.2 mph 21.5 mph, 2016 8.7 mph, 2015
Maximum Gust 27.3 mph 20:08 22.6 mph 33.4 mph, 2020 10.9 mph, 2015
Mean Wind Direction SSW
Rainfall 0.5 mm 2.2 mm (68%) 10.0 mm, 2009
Maximum Hourly Rain 0.3 mm 11:40 2.9 mm, 2021
Maximum 10-min Rain 0.2 mm 0.8 mm, 2021
Maximum Rain Rate n/a 18, 2020
Minimum Dew Point 6.9 °C 23:57 6.7 °C 6.9 °C, 2017 -11.5 °C, 2012
Maximum Dew Point 8.4 °C 01:40 8.7 °C 10.3 °C, 2020 -7.9 °C, 2012
Mean Dew Point 7.8 °C 8.0 °C 7.8 °C, 2017 -9.7 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.3 °C 07:33 9.2 °C 10.3 °C, 2017 -3.1 °C, 2009
Day Maximum (09-21) 11.6 °C 15:44 11.6 °C 13.0 °C, 2020 0.2 °C, 2009
Max 10m Temp Rise 0.2 °C 08:55 0.2 °C 0.9 °C, 2025 0.2 °C, 2016
Max 1hr Temp Rise 0.8 °C 09:27 0.7 °C 3.0 °C, 2025 0.7 °C, 2016
Max 1hr Hum Rise 4% 11:40 2% 8%, 2012 3%, 2019
Max 10m Temp Fall 0.2 °C 11:18 0.2 °C 0.5 °C, 2010 0.2 °C, 2011
Max 1hr Temp Fall 0.8 °C 12:07 0.6 °C 1.8 °C, 2010 0.6 °C, 2015
Max 1hr Hum Fall 3% 07:42 2% 13%, 2016 3%, 2017
Max 10m Wind Speed 13.0 mph 20:16 11.6 mph 16.0 mph, 2016 6.1 mph, 2015
Minimum Feels-like 10.3 °C 07:42 8.3 °C 10.3 °C, 2017 -8.7 °C, 2012
Maximum Feels-like 12.0 °C 15:19 12.1 °C 14.0 °C, 2024 -1.8 °C, 2012
Mean Feels-like 11.3 °C 11.3 °C 11.3 °C, 2017 -5.6 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 18 hrs, 2012 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 1.3 °C (-3.6) 1.9 °C (-3.0) 9.1 °C (+4.2), 2025 1.3 °C (-3.6), 2017
Humidity Range 7% 6% 33%, 2013 7%, 2017
Pressure Range 9 hPa 8 hPa 22 hPa, 2013 2 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]0.1 hrs (2%) [0.6%] 8.3 [101%], 2025 0 [0%], 2009
Wet Hours 2
[Mean rain rate: 0.2 mm/h]		6 hrs (162%) [13%] 6, 2020 , 2009
Cloud Cover Overcast with periods of Mostly Cloudy
Events None
Comments some Rain/Showers
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 2nd February 2017.
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

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose