Daily Report for 2nd December 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.6 °C (+1.6) 07:48 2.4 °C (-1.6) 11.9 °C (+7.9), 2015 -2.9 °C (-6.9), 2023
Maximum Temperature 8.0 °C (-1.2) 13:55 7.7 °C (-1.5) 14.8 °C (+5.7), 2018 -0.7 °C (-9.8), 2010
Mean Temperature 6.9 °C (+0.2) 5.0 °C (-1.5) 13.4 °C, 2018 -1.3 °C, 2010
Minimum Humidity 75% 13:20 70% 93%, 2023 61%, 2012
Maximum Humidity 82% 21:37 81% 98%, 2009 82%, 2015
Mean Humidity 78% 75% 95%, 2009 74%, 2015
Minimum Pressure 1024 hPa 14:04 1025 hPa 1030 hPa, 2013 993 hPa, 2009
Maximum Pressure 1026 hPa 12:23 1028 hPa 1035 hPa, 2013 999 hPa, 2018
Mean Pressure 1025 hPa 1027 hPa 1033 hPa, 2013 998 hPa, 2018
Mean Wind Speed 0.7 mph (-4.4) 2.0 mph (-3.1) 8.1 mph, 2015 0.7 mph, 2016
Maximum Wind Speed 5.5 mph 00:08 8.1 mph 18.5 mph, 2014 5.5 mph, 2016
Maximum Gust 8.4 mph 00:08 12.1 mph 30.6 mph, 2014 8.1 mph, 2013
Mean Wind Direction N
Rainfall 0.4 mm 0.4 mm (11%) 10.9 mm, 2009
Maximum Hourly Rain 0.2 mm 4.4 mm, 2009
Maximum 10-min Rain 0.2 mm 2.2 mm, 2025
Maximum Rain Rate n/a 24, 2025
Minimum Dew Point 2.2 °C 04:16 -2.0 °C 10.3 °C, 2018 -5.4 °C, 2010
Maximum Dew Point 4.1 °C 17:50 3.5 °C 12.3 °C, 2018 -2.7 °C, 2010
Mean Dew Point 3.3 °C 1.0 °C 11.7 °C, 2018 -3.5 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 4.1 °C * 21:00 1.6 °C 11.9 °C, 2015 -1.8 °C, 2010
Day Maximum (09-21) 8.0 °C 13:55 7.7 °C 14.8 °C, 2018 -0.7 °C, 2010
Max 10m Temp Rise 0.2 °C 09:30 0.4 °C 0.5 °C, 2009 0.2 °C, 2010
Max 1hr Temp Rise 0.7 °C 10:05 1.5 °C 1.5 °C, 2011 0.5 °C, 2010
Max 1hr Hum Rise 4% 19:34 7% 9%, 2017 2%, 2022
Max 10m Temp Fall 0.1 °C 00:27 0.2 °C 0.7 °C, 2009 0.1 °C, 2015
Max 1hr Temp Fall 0.4 °C 19:11 0.8 °C 1.8 °C, 2012 0.4 °C, 2015
Max 1hr Hum Fall 2% 11:23 4% 14%, 2012 1%, 2023
Max 10m Wind Speed 3.8 mph 00:17 5.9 mph 14.0 mph, 2014 3.7 mph, 2013
Minimum Feels-like 3.3 °C 07:32 -1.9 °C 12.8 °C, 2018 -8.7 °C, 2010
Maximum Feels-like 8.0 °C 12:26 7.2 °C 17.0 °C, 2018 -1.7 °C, 2010
Mean Feels-like 6.6 °C 3.9 °C 15.6 °C, 2018 -5.8 °C, 2010
Air-frost Hrs 0 hrs 2 hrs 24 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.4 °C (-2.7) 5.2 °C (+0.1) 6.1 °C (+1.0), 2024 1.1 °C (-4.0), 2010
Humidity Range 7% 12% 26%, 2012 3%, 2023
Pressure Range 2 hPa 4 hPa 17 hPa, 2020 1 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]3.3 hrs (77%) [23%] 7.4 [102%], 2021 0 [0%], 2010
Wet Hours 2
[Mean rain rate: 0.2 mm/h]		2 hrs (50%) [4.2%] 7, 2009 0, 2012
Cloud Cover Overcast or Mostly 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 2nd December 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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose