Daily Report for 26th November 2011

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.5 °C (+2.2) 01:46 8.2 °C (+2.7) 10.3 °C (+6.0), 2019 -3.2 °C (-7.5), 2010
Maximum Temperature 12.7 °C (+2.9) 14:13 12.8 °C (+2.0) 13.2 °C (+3.4), 2019 2.6 °C (-7.2), 2010
Mean Temperature 9.9 °C (+2.5) 10.6 °C (+2.3) 11.4 °C, 2019 -0.8 °C, 2010
Minimum Humidity 68% 14:08 81% 96%, 2014 63%, 2009
Maximum Humidity 92% 08:06 96% 98%, 2014 80%, 2016
Mean Humidity 80% 90% 98%, 2014 76%, 2013
Minimum Pressure 1019 hPa 23:56 1014 hPa 1035 hPa, 2013 985 hPa, 2021
Maximum Pressure 1030 hPa 01:19 1020 hPa 1040 hPa, 2013 1001 hPa, 2009
Mean Pressure 1024 hPa 1017 hPa 1038 hPa, 2013 996 hPa, 2019
Mean Wind Speed 7.7 mph (+3.1) 4.2 mph (-0.4) 8.2 mph, 2021 0.2 mph, 2020
Maximum Wind Speed 20.8 mph 11.3 mph 23.5 mph, 2022 2.1 mph, 2020
Maximum Gust 30.6 mph 13:34 15.7 mph 34.6 mph, 2022 5.7 mph, 2020
Mean Wind Direction SW
Rainfall 0.0 mm 24.1 mm (42%) 5.5 mm, 2012
Maximum Hourly Rain n/a 1.8, 2014
Maximum 10-min Rain n/a 0.9, 2012
Maximum Rain Rate n/a 15, 2012
Minimum Dew Point 4.3 °C 01:40 6.8 °C 8.8 °C, 2019 -5.4 °C, 2010
Maximum Dew Point 8.2 °C 11:10 11.1 °C 11.8 °C, 2019 -1.5 °C, 2010
Mean Dew Point 6.6 °C 9.0 °C 10.0 °C, 2019 -3.6 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 6.5 °C 01:45 8.8 °C 10.3 °C, 2019 -2.1 °C, 2010
Day Maximum (09-21) 12.7 °C 14:11 12.6 °C 13.2 °C, 2019 2.6 °C, 2010
Max 10m Temp Rise 0.3 °C 09:42 0.3 °C 0.7 °C, 2020 0.1 °C, 2014
Max 1hr Temp Rise 1.6 °C 10:54 1.0 °C 2.3 °C, 2020 0.3 °C, 2014
Max 1hr Hum Rise 3% 01:55 3% 8%, 2023 1%, 2014
Max 10m Temp Fall 0.4 °C 00:58 0.4 °C 0.8 °C, 2021 0.1 °C, 2014
Max 1hr Temp Fall 1.8 °C 01:32 1.3 °C 2.1 °C, 2021 0.2 °C, 2014
Max 1hr Hum Fall 5% 11:36 6% 12%, 2009 0%, 2014
Max 10m Wind Speed 15.8 mph 13:41 7.8 mph 15.8 mph, 2011 0.8 mph, 2020
Minimum Feels-like 4.0 °C 07:48 6.9 °C 11.1 °C, 2019 -6.3 °C, 2010
Maximum Feels-like 12.9 °C 13:57 14.4 °C 15.4 °C, 2019 2.5 °C, 2010
Mean Feels-like 9.2 °C 11.1 °C 12.7 °C, 2019 -2.5 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 17 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.2 °C (+0.6) 4.6 °C (-0.7) 9.2 °C (+3.6), 2023 1.6 °C (-4.0), 2014
Humidity Range 24% 15% 25%, 2009 2%, 2014
Pressure Range 11 hPa 7 hPa 28 hPa, 2021 2 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [13%]55 hrs (75%) [26%] 7.2 [96%], 2010 0 [0%], 2014
Wet Hours 023 hrs (42%) [3.7%] 10, 2014 0, 2010
Cloud Cover Mostly 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 26th November 2011.
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

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Webcam Summary of Cloud Conditions

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Wind rose