Daily Report for 5th February 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.0 °C (+0.0) 05:40 5.9 °C (+3.0) 11.3 °C (+8.3), 2011 0.3 °C (-2.7), 2012
Maximum Temperature 5.7 °C (-2.1) 14:37 9.5 °C (+1.6) 13.0 °C (+5.2), 2011 2.2 °C (-5.6), 2012
Mean Temperature 4.4 °C (-1.0) 8.1 °C (+2.3) 12.0 °C, 2011 1.0 °C, 2012
Minimum Humidity 77% 00:17 75% 89%, 2012 45%, 2013
Maximum Humidity 88% 12:34 85% 98%, 2015 83%, 2011
Mean Humidity 83% 81% 94%, 2012 68%, 2013
Minimum Pressure 997 hPa 05:54 995 hPa 1041 hPa, 2023 978 hPa, 2014
Maximum Pressure 1014 hPa 23:03 1005 hPa 1047 hPa, 2023 990 hPa, 2014
Mean Pressure 1003 hPa 999 hPa 1045 hPa, 2023 983 hPa, 2014
Mean Wind Speed 2.4 mph (-2.7) 5.1 mph (+0.0) 11.9 mph, 2014 0.6 mph, 2012
Maximum Wind Speed 8.0 mph 14:46 13.2 mph 23.9 mph, 2014 6.8 mph, 2020
Maximum Gust 12.6 mph 13:44 20.4 mph 42.7 mph, 2014 9.2 mph, 2020
Mean Wind Direction NNE
Rainfall 0.7 mm 5.6 mm (70%) 9.0 mm, 2009
Maximum Hourly Rain 0.5 mm 01:06 2.8 mm, 2014
Maximum 10-min Rain 0.3 mm 01:06 0.7 mm, 2014
Maximum Rain Rate 0.4 mm/h 01:01 4.8 mm/h, 2021
Minimum Dew Point 0.4 °C 05:23 3.0 °C 7.4 °C, 2011 -5.8 °C, 2013
Maximum Dew Point 3.1 °C 13:41 6.4 °C 9.0 °C, 2016 0.4 °C, 2018
Mean Dew Point 1.8 °C 4.9 °C 7.9 °C, 2011 -1.3 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 3.0 °C 05:40 6.3 °C 11.3 °C, 2011 -0.6 °C, 2012
Day Maximum (09-21) 5.7 °C 14:37 9.5 °C 13.0 °C, 2011 2.2 °C, 2012
Max 10m Temp Rise 0.3 °C 06:59 0.3 °C 0.8 °C, 2023 0.1 °C, 2011
Max 1hr Temp Rise 0.9 °C 13:48 0.9 °C 2.8 °C, 2022 0.4 °C, 2011
Max 1hr Hum Rise 3% 01:16 3% 16%, 2013 2%, 2012
Max 10m Temp Fall 0.2 °C 01:34 0.3 °C 0.6 °C, 2013 0.2 °C, 2011
Max 1hr Temp Fall 0.8 °C 04:20 1.0 °C 1.8 °C, 2013 0.3 °C, 2012
Max 1hr Hum Fall 5% 14:00 4% 23%, 2015 3%, 2009
Max 10m Wind Speed 6.4 mph 14:51 10.5 mph 18.6 mph, 2014 5.1 mph, 2020
Minimum Feels-like -0.4 °C 10:15 3.4 °C 11.7 °C, 2011 -5.1 °C, 2018
Maximum Feels-like 5.4 °C 00:54 9.7 °C 13.5 °C, 2011 1.7 °C, 2018
Mean Feels-like 3.1 °C 7.3 °C 12.4 °C, 2011 -1.7 °C, 2015
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.7 °C (-2.1) 3.6 °C (-1.3) 7.8 °C (+3.0), 2022 1.7 °C (-3.1), 2011
Humidity Range 11% 10% 42%, 2015 7%, 2024
Pressure Range 17 hPa 10 hPa 17 hPa, 2017 3 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]4.6 hrs (35%) [11%] 8 [96%], 2020 0 [0%], 2009
Wet Hours 2
[Mean rain rate: 0.3 mm/h]
13 hrs (140%) [11%] 5, 2014 , 2009
Cloud Cover am: Mostly Cloudy transitioned to Overcast
pm: Overcast
Events None
Comments o.night 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 5th 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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose