Daily Report for 4th June 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.9 °C (+0.7) 01:52 10.4 °C (-0.8) 13.4 °C (+2.2), 2018 6.2 °C (-5.0), 2012
Maximum Temperature 18.5 °C (-1.4) 14:03 14.4 °C (-5.4) 27.8 °C (+7.9), 2010 14.2 °C (-5.7), 2012
Mean Temperature 15.2 °C (-0.3) 12.4 °C (-3.1) 18.3 °C, 2011 10.1 °C, 2012
Minimum Humidity 82% 14:36 82% 82%, 2016 27%, 2015
Maximum Humidity 91% 08:30 90% 98%, 2012 72%, 2017
Mean Humidity 87% 87% 87%, 2016 51%, 2015
Minimum Pressure 1015 hPa 06:15 1017 hPa 1024 hPa, 2023 1001 hPa, 2020
Maximum Pressure 1019 hPa 22:37 1021 hPa 1031 hPa, 2013 1008 hPa, 2020
Mean Pressure 1016 hPa 1019 hPa 1027 hPa, 2013 1004 hPa, 2020
Mean Wind Speed 2.4 mph (-2.0) 5.2 mph (+0.8) 6.8 mph, 2022 1.7 mph, 2021
Maximum Wind Speed 7.8 mph 23:45 12.6 mph 19.7 mph, 2014 7.8 mph, 2016
Maximum Gust 10.5 mph 12:42 20.2 mph 29.4 mph, 2014 10.5 mph, 2016
Mean Wind Direction NNE
Rainfall 0.0 mm 0.5 mm (8%) 8.9 mm, 2012
Maximum Hourly Rain n/a 3, 2014
Maximum 10-min Rain n/a 1.3, 2014
Maximum Rain Rate n/a 24, 2014
Minimum Dew Point 10.1 °C 00:34 8.6 °C 11.3 °C, 2018 1.6 °C, 2013
Maximum Dew Point 15.7 °C 13:35 11.8 °C 15.7 °C, 2016 6.4 °C, 2009
Mean Dew Point 12.8 °C 10.2 °C 13.3 °C, 2018 4.6 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.9 °C 01:52 10.8 °C 14.6 °C, 2018 6.6 °C, 2009
Day Maximum (09-21) 18.5 °C 14:03 14.4 °C 27.8 °C, 2010 14.2 °C, 2012
Max 10m Temp Rise 0.6 °C 11:35 0.3 °C 1.0 °C, 2015 0.4 °C, 2014
Max 1hr Temp Rise 2.1 °C 12:21 1.1 °C 4.5 °C, 2015 1.2 °C, 2014
Max 1hr Hum Rise 3% 22:05 2% 21%, 2014 3%, 2016
Max 10m Temp Fall 0.3 °C 21:03 0.2 °C 1.6 °C, 2024 0.3 °C, 2016
Max 1hr Temp Fall 1.4 °C 21:52 0.8 °C 4.3 °C, 2014 1.0 °C, 2018
Max 1hr Hum Fall 4% 13:37 3% 18%, 2014 2%, 2021
Max 10m Wind Speed 6.4 mph 23:53 9.1 mph 14.5 mph, 2014 6.0 mph, 2021
Minimum Feels-like 13.2 °C 00:00 9.3 °C 15.3 °C, 2018 2.6 °C, 2012
Maximum Feels-like 22.8 °C 14:02 16.5 °C 30.6 °C, 2010 14.2 °C, 2012
Mean Feels-like 17.6 °C 13.4 °C 20.0 °C, 2011 9.1 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.6 °C (-2.1) 4.0 °C (-4.6) 18.1 °C (+9.4), 2010 3.2 °C (-5.5), 2021
Humidity Range 9% 9% 51%, 2015 9%, 2016
Pressure Range 4 hPa 4 hPa 12 hPa, 2019 2 hPa, 2025
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]0 hrs (0%) [0%] 15 [101%], 2010 0 [0%], 2016
Wet Hours 00.5 hrs (10%) [0.5%] 8, 2021 0, 2009
Cloud Cover Overcast
Events None
Comments -
Extra Comments
Issues 07-11 data loss. Unreconstructed, but figured corrected
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 4th June 2016.
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