Daily Report for 2nd April 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.1 °C (+1.7) 06:56 8.6 °C (+3.2) 11.1 °C (+5.7), 2011 -1.0 °C (-6.4), 2013
Maximum Temperature 16.4 °C (+3.4) 16:23 16.1 °C (+3.1) 18.6 °C (+5.6), 2014 7.3 °C (-5.7), 2013
Mean Temperature 11.3 °C (+2.6) 11.9 °C (+3.2) 15.1 °C, 2011 3.2 °C, 2013
Minimum Humidity 50% 17:38 50% 83%, 2018 34%, 2013
Maximum Humidity 81% 07:39 79% 96%, 2018 80%, 2020
Mean Humidity 66% 65% 91%, 2018 55%, 2013
Minimum Pressure 1014 hPa 00:01 1010 hPa 1029 hPa, 2021 995 hPa, 2018
Maximum Pressure 1025 hPa 23:07 1019 hPa 1033 hPa, 2021 1006 hPa, 2024
Mean Pressure 1020 hPa 1014 hPa 1031 hPa, 2021 1000 hPa, 2018
Mean Wind Speed 2.4 mph (-2.5) 3.5 mph (-1.4) 8.3 mph, 2013 2.1 mph, 2012
Maximum Wind Speed 7.4 mph 08:28 10.5 mph 19.2 mph, 2013 7.4 mph, 2017
Maximum Gust 10.5 mph 00:27 14.2 mph 26.3 mph, 2013 10.5 mph, 2017
Mean Wind Direction NNW
Rainfall 0.0 mm 0.0 mm (0%) 13.6 mm, 2018
Maximum Hourly Rain n/a 2.4, 2024
Maximum 10-min Rain n/a 0.9, 2015
Maximum Rain Rate n/a 42, 2015
Minimum Dew Point 1.8 °C 23:58 3.2 °C 7.2 °C, 2024 -9.3 °C, 2013
Maximum Dew Point 6.7 °C 13:17 7.2 °C 11.4 °C, 2011 -1.1 °C, 2013
Mean Dew Point 4.9 °C 5.3 °C 9.0 °C, 2011 -5.8 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.1 °C 06:56 8.6 °C 12.5 °C, 2011 -1.0 °C, 2013
Day Maximum (09-21) 16.4 °C 16:23 16.1 °C 18.6 °C, 2014 7.3 °C, 2013
Max 10m Temp Rise 0.6 °C 13:54 0.6 °C 1.1 °C, 2012 0.3 °C, 2015
Max 1hr Temp Rise 1.9 °C 14:44 1.9 °C 5.4 °C, 2012 1.1 °C, 2015
Max 1hr Hum Rise 5% 21:46 6% 19%, 2022 5%, 2009
Max 10m Temp Fall 0.5 °C 21:37 0.5 °C 1.5 °C, 2022 0.2 °C, 2009
Max 1hr Temp Fall 2.2 °C 21:50 1.6 °C 2.5 °C, 2015 0.8 °C, 2009
Max 1hr Hum Fall 6% 10:02 8% 22%, 2015 5%, 2018
Max 10m Wind Speed 5.7 mph 09:28 8.0 mph 13.6 mph, 2013 5.7 mph, 2017
Minimum Feels-like 4.2 °C 07:15 7.2 °C 11.1 °C, 2011 -6.5 °C, 2013
Maximum Feels-like 16.4 °C 16:20 16.1 °C 20.3 °C, 2011 6.1 °C, 2013
Mean Feels-like 10.9 °C 11.7 °C 16.1 °C, 2011 -0.9 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 6 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.3 °C (+1.7) 7.5 °C (-0.2) 12.6 °C (+5.0), 2012 4.8 °C (-2.8), 2010
Humidity Range 31% 29% 55%, 2015 13%, 2018
Pressure Range 11 hPa 10 hPa 16 hPa, 2018 4 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 9 [77%]13 hrs (130%) [56%] 11 [94%], 2013 0 [0%], 2018
Wet Hours 00 hrs (0%) [0%] 12, 2018 0, 2009
Cloud Cover am: Sunny transitioned to Partly Cloudy
pm: Partly Cloudy
Events None
Comments -
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 2nd April 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