Daily Report for 3rd February 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.3 °C (+2.3) 23:55 8.2 °C (+5.2) 10.5 °C (+7.5), 2024 -4.6 °C (-7.6), 2012
Maximum Temperature 10.6 °C (+2.7) 12:52 11.2 °C (+3.3) 13.1 °C (+5.2), 2024 0.9 °C (-7.0), 2012
Mean Temperature 8.7 °C (+2.5) 10.2 °C (+4.2) 11.8 °C, 2024 -1.9 °C, 2012
Minimum Humidity 66% 14:26 75% 85%, 2024 53%, 2012
Maximum Humidity 82% 07:29 84% 98%, 2010 76%, 2012
Mean Humidity 76% 80% 90%, 2010 65%, 2012
Minimum Pressure 989 hPa 20:21 995 hPa 1037 hPa, 2012 989 hPa, 2017
Maximum Pressure 997 hPa 07:16 1003 hPa 1040 hPa, 2012 997 hPa, 2017
Mean Pressure 993 hPa 998 hPa 1038 hPa, 2012 993 hPa, 2017
Mean Wind Speed 7.6 mph (+2.5) 7.2 mph (+2.1) 7.8 mph, 2020 2.6 mph, 2010
Maximum Wind Speed 17.4 mph 21:04 15.9 mph 21.9 mph, 2011 8.1 mph, 2012
Maximum Gust 29.4 mph 21:02 24.8 mph 36.9 mph, 2020 10.7 mph, 2012
Mean Wind Direction S
Rainfall 2.0 mm 4.2 mm (87%) 4.8 mm, 2018
Maximum Hourly Rain 1.1 mm 04:44 1.1 mm, 2017
Maximum 10-min Rain 0.5 mm 04:19 0.5 mm, 2017
Maximum Rain Rate 11 mm/h 04:14 11 mm/h, 2017
Minimum Dew Point 1.4 °C 23:55 4.9 °C 8.8 °C, 2024 -9.2 °C, 2012
Maximum Dew Point 6.9 °C 00:05 8.1 °C 10.9 °C, 2024 -6.2 °C, 2012
Mean Dew Point 4.7 °C 6.9 °C 9.9 °C, 2024 -7.8 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 7.7 °C * 06:05 8.7 °C 10.5 °C, 2024 -4.6 °C, 2012
Day Maximum (09-21) 10.6 °C 12:52 11.2 °C 13.1 °C, 2024 0.9 °C, 2012
Max 10m Temp Rise 0.3 °C 09:56 0.2 °C 0.5 °C, 2012 0.2 °C, 2018
Max 1hr Temp Rise 1.1 °C 10:23 0.8 °C 2.0 °C, 2012 0.5 °C, 2024
Max 1hr Hum Rise 7% 17:02 4% 10%, 2020 3%, 2013
Max 10m Temp Fall 0.5 °C 20:47 0.3 °C 0.6 °C, 2020 0.1 °C, 2010
Max 1hr Temp Fall 1.6 °C 21:21 0.9 °C 1.6 °C, 2012 0.3 °C, 2013
Max 1hr Hum Fall 6% 12:41 3% 19%, 2012 1%, 2013
Max 10m Wind Speed 14.8 mph 21:11 12.7 mph 15.0 mph, 2011 6.2 mph, 2012
Minimum Feels-like 0.4 °C 23:56 5.7 °C 11.2 °C, 2024 -8.3 °C, 2012
Maximum Feels-like 10.6 °C 00:00 11.6 °C 14.8 °C, 2024 0.8 °C, 2012
Mean Feels-like 6.5 °C 9.7 °C 13.1 °C, 2024 -4.0 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 19 hrs, 2012 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.3 °C (+0.4) 3.1 °C (-1.9) 9.2 °C (+4.2), 2013 1.9 °C (-3.0), 2018
Humidity Range 16% 9% 29%, 2011 8%, 2022
Pressure Range 8 hPa 8 hPa 15 hPa, 2021 2 hPa, 2024
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [24%]2.1 hrs (27%) [8.5%] 7 [85%], 2019 0 [0%], 2013
Wet Hours 3
[Mean rain rate: 0.7 mm/h]
9 hrs (162%) [13%] 12, 2018 , 2009
Cloud Cover am: Partly Cloudy
pm: Partly Cloudy transitioned to Mostly Cloudy
Events None
Comments o.night Shower; eve Rain
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 3rd 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