Daily Report for 16th February 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.0 °C (+4.2) 03:47 3.9 °C (+1.0) 10.0 °C (+7.2), 2024 -2.1 °C (-4.8), 2016
Maximum Temperature 11.1 °C (+3.0) 15:52 7.9 °C (-0.1) 14.7 °C (+6.6), 2022 4.4 °C (-3.7), 2010
Mean Temperature 8.9 °C (+3.6) 5.8 °C (+0.5) 12.4 °C, 2022 3.0 °C, 2016
Minimum Humidity 66% 17:15 72% 94%, 2010 48%, 2013
Maximum Humidity 86% 06:46 85% 98%, 2010 83%, 2012
Mean Humidity 78% 80% 96%, 2010 66%, 2013
Minimum Pressure 1028 hPa 00:13 1012 hPa 1028 hPa, 2017 991 hPa, 2010
Maximum Pressure 1031 hPa 09:18 1019 hPa 1035 hPa, 2016 998 hPa, 2010
Mean Pressure 1029 hPa 1015 hPa 1032 hPa, 2016 994 hPa, 2010
Mean Wind Speed 4.7 mph (-0.4) 4.3 mph (-0.8) 12.7 mph, 2022 1.9 mph, 2013
Maximum Wind Speed 10.2 mph 14:24 11.0 mph 29.7 mph, 2020 6.7 mph, 2013
Maximum Gust 14.7 mph 15:33 17.0 mph 49.5 mph, 2020 8.7 mph, 2013
Mean Wind Direction WSW
Rainfall 0.6 mm 17.3 mm (67%) 27.0 mm, 2010
Maximum Hourly Rain 0.3 mm 21:27 3.6 mm, 2010
Maximum 10-min Rain 0.2 mm 2.2 mm, 2020
Maximum Rain Rate n/a 42, 2020
Minimum Dew Point 4.1 °C 19:16 0.7 °C 7.5 °C, 2024 -4.0 °C, 2016
Maximum Dew Point 7.0 °C 12:57 4.5 °C 12.4 °C, 2022 1.0 °C, 2025
Mean Dew Point 5.3 °C 2.6 °C 10.3 °C, 2022 -1.2 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.0 °C 03:47 4.2 °C 10.3 °C, 2020 -2.1 °C, 2016
Day Maximum (09-21) 11.1 °C 15:52 7.8 °C 14.7 °C, 2022 4.4 °C, 2010
Max 10m Temp Rise 0.3 °C 10:13 0.3 °C 0.6 °C, 2009 0.2 °C, 2010
Max 1hr Temp Rise 1.1 °C 10:59 1.1 °C 2.4 °C, 2016 0.4 °C, 2021
Max 1hr Hum Rise 5% 20:55 4% 12%, 2018 2%, 2010
Max 10m Temp Fall 0.2 °C 21:37 0.2 °C 1.1 °C, 2009 0.2 °C, 2012
Max 1hr Temp Fall 0.6 °C 21:37 0.9 °C 2.4 °C, 2013 0.6 °C, 2017
Max 1hr Hum Fall 7% 15:54 6% 19%, 2014 2%, 2010
Max 10m Wind Speed 8.1 mph 14:09 8.5 mph 21.3 mph, 2020 5.2 mph, 2013
Minimum Feels-like 3.9 °C 07:50 0.5 °C 10.7 °C, 2024 -4.0 °C, 2016
Maximum Feels-like 11.1 °C 15:48 7.7 °C 16.7 °C, 2022 2.8 °C, 2025
Mean Feels-like 7.7 °C 4.1 °C 13.5 °C, 2022 -0.5 °C, 2025
Air-frost Hrs 0 hrs 0 hrs 4 hrs, 2016 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.1 °C (-1.3) 4.0 °C (-1.1) 9.1 °C (+3.7), 2016 2.5 °C (-2.9), 2021
Humidity Range 20% 14% 41%, 2018 4%, 2010
Pressure Range 3 hPa 7 hPa 20 hPa, 2024 1 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1.3 [14%]20 hrs (47%) [15%] 8.5 [95%], 2016 0 [0%], 2010
Wet Hours 2
[Mean rain rate: 0.3 mm/h]		54 hrs (182%) [14%] 17, 2010 , 2009
Cloud Cover Mostly Cloudy with periods of Partly Cloudy
Events None
Comments late eve Rain
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 16th 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