Daily Report for 24th November 2015

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.4 °C (+2.1) 23:48 8.8 °C (+3.2) 11.1 °C (+6.8), 2024 -0.3 °C (-4.6), 2017
Maximum Temperature 9.8 °C (-0.2) 08:35 13.3 °C (+2.4) 17.8 °C (+7.8), 2024 4.3 °C (-5.7), 2010
Mean Temperature 8.2 °C (+0.9) 11.2 °C (+2.8) 15.7 °C, 2024 2.5 °C, 2010
Minimum Humidity 79% 00:01 75% 93%, 2012 61%, 2023
Maximum Humidity 92% 07:41 91% 98%, 2011 78%, 2016
Mean Humidity 88% 84% 98%, 2012 73%, 2023
Minimum Pressure 1009 hPa 17:09 1012 hPa 1027 hPa, 2013 993 hPa, 2012
Maximum Pressure 1018 hPa 00:14 1019 hPa 1034 hPa, 2013 998 hPa, 2024
Mean Pressure 1011 hPa 1016 hPa 1030 hPa, 2013 996 hPa, 2024
Mean Wind Speed 5.7 mph (+1.1) 6.3 mph (+1.7) 15.6 mph, 2024 0.4 mph, 2021
Maximum Wind Speed 12.1 mph 01:39 15.9 mph 31.8 mph, 2024 4.7 mph, 2014
Maximum Gust 21.5 mph 04:55 23.3 mph 44.9 mph, 2024 7.1 mph, 2014
Mean Wind Direction WSW
Rainfall 7.9 mm 53.2 mm (99%) 11.0 mm, 2024
Maximum Hourly Rain 3.1 mm 05:53 6.0 mm, 2024
Maximum 10-min Rain 1.1 mm 05:05 1.9 mm, 2024
Maximum Rain Rate 36 mm/h 04:56 36 mm/h, 2015
Minimum Dew Point 3.4 °C 00:01 5.7 °C 9.7 °C, 2024 -1.3 °C, 2010
Maximum Dew Point 8.6 °C 08:35 11.1 °C 13.5 °C, 2024 1.2 °C, 2010
Mean Dew Point 6.4 °C 8.5 °C 12.6 °C, 2024 -0.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 6.2 °C * 21:05 9.4 °C 13.5 °C, 2024 0.6 °C, 2010
Day Maximum (09-21) * 9.6 °C * 09:02 13.1 °C 17.8 °C, 2024 4.3 °C, 2010
Max 10m Temp Rise 0.2 °C 04:48 0.3 °C 1.4 °C, 2009 0.1 °C, 2016
Max 1hr Temp Rise 0.7 °C 04:55 1.0 °C 2.7 °C, 2009 0.4 °C, 2016
Max 1hr Hum Rise 3% 01:01 4% 10%, 2009 1%, 2016
Max 10m Temp Fall 0.2 °C 08:59 0.4 °C 0.8 °C, 2023 0.2 °C, 2015
Max 1hr Temp Fall 0.8 °C 09:46 1.0 °C 2.5 °C, 2017 0.4 °C, 2016
Max 1hr Hum Fall 2% 09:23 5% 12%, 2009 1%, 2012
Max 10m Wind Speed 9.9 mph 05:18 11.9 mph 23.0 mph, 2024 3.6 mph, 2021
Minimum Feels-like 2.7 °C 23:44 8.0 °C 12.2 °C, 2024 -3.2 °C, 2023
Maximum Feels-like 10.1 °C 09:02 15.2 °C 20.5 °C, 2024 4.3 °C, 2010
Mean Feels-like 6.1 °C 11.8 °C 18.3 °C, 2024 1.2 °C, 2010
Air-frost Hrs 0 hrs 0.3 hrs 0.9 hrs, 2017 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.4 °C (-2.3) 4.5 °C (-0.8) 8.7 °C (+3.0), 2017 2.4 °C (-3.3), 2018
Humidity Range 13% 15% 28%, 2017 5%, 2012
Pressure Range 9 hPa 7 hPa 23 hPa, 2012 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]30 hrs (44%) [15%] 5.5 [73%], 2010 0 [0%], 2009
Wet Hours 8
[Mean rain rate: 1.0 mm/h]		60 hrs (119%) [10%] 13, 2012 0, 2010
Cloud Cover Overcast with periods of Mostly Cloudy
Events None
Comments -08, 11 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 24th November 2015.
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