Daily Report for 3rd November 2011

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.8 °C (+6.0) 22:12 10.3 °C (+3.5) 13.6 °C (+6.8), 2010 1.3 °C (-5.5), 2021
Maximum Temperature 17.4 °C (+5.1) 14:48 15.7 °C (+3.5) 17.4 °C (+5.1), 2011 8.9 °C (-3.4), 2021
Mean Temperature 15.3 °C (+5.6) 13.6 °C (+3.5) 15.3 °C, 2011 5.8 °C, 2021
Minimum Humidity 78% 15:03 72% 90%, 2015 54%, 2013
Maximum Humidity 95% 23:59 93% 98%, 2009 80%, 2016
Mean Humidity 87% 85% 93%, 2022 71%, 2013
Minimum Pressure 991 hPa 23:34 998 hPa 1028 hPa, 2024 978 hPa, 2023
Maximum Pressure 996 hPa 00:12 1007 hPa 1031 hPa, 2024 985 hPa, 2019
Mean Pressure 994 hPa 1002 hPa 1029 hPa, 2024 982 hPa, 2019
Mean Wind Speed 4.9 mph (+0.3) 4.7 mph (+0.1) 7.7 mph, 2013 1.7 mph, 2017
Maximum Wind Speed 13.8 mph 12.3 mph 20.4 mph, 2013 6.9 mph, 2015
Maximum Gust 20.1 mph 11:13 17.6 mph 29.4 mph, 2013 9.0 mph, 2015
Mean Wind Direction SSE
Rainfall 6.6 mm 8.0 mm (119%) 24.0 mm, 2022
Maximum Hourly Rain 5.0 mm 17:10 8.4 mm, 2022
Maximum 10-min Rain 1.6 mm 16:45 3.4 mm, 2022
Maximum Rain Rate 15 mm/h 16:36 42 mm/h, 2022
Minimum Dew Point 11.5 °C 21:48 8.7 °C 11.5 °C, 2011 -1.8 °C, 2016
Maximum Dew Point 14.3 °C 10:52 13.3 °C 14.3 °C, 2011 4.9 °C, 2016
Mean Dew Point 13.1 °C 11.0 °C 13.1 °C, 2011 1.9 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 14.2 °C * 21:00 11.6 °C 14.2 °C, 2011 1.3 °C, 2021
Day Maximum (09-21) 17.4 °C 14:47 15.6 °C 17.4 °C, 2011 8.9 °C, 2021
Max 10m Temp Rise 0.2 °C 01:05 0.3 °C 0.6 °C, 2009 0.1 °C, 2014
Max 1hr Temp Rise 0.7 °C 11:02 0.9 °C 2.3 °C, 2016 0.3 °C, 2014
Max 1hr Hum Rise 5% 16:36 4% 11%, 2023 1%, 2015
Max 10m Temp Fall 0.2 °C 17:01 0.2 °C 0.8 °C, 2009 0.2 °C, 2010
Max 1hr Temp Fall 0.6 °C 17:28 0.7 °C 2.3 °C, 2009 0.4 °C, 2024
Max 1hr Hum Fall 8% 11:05 8% 16%, 2009 1%, 2015
Max 10m Wind Speed 10.2 mph 11:15 8.4 mph 14.5 mph, 2013 0.9 mph, 2020
Minimum Feels-like 14.8 °C 21:44 10.4 °C 14.8 °C, 2011 -0.5 °C, 2016
Maximum Feels-like 20.5 °C 14:34 18.5 °C 20.5 °C, 2011 8.4 °C, 2012
Mean Feels-like 18.2 °C 15.4 °C 18.2 °C, 2011 4.5 °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 4.6 °C (-0.9) 5.4 °C (-0.1) 9.0 °C (+3.5), 2016 1.7 °C (-3.8), 2024
Humidity Range 17% 21% 42%, 2013 5%, 2015
Pressure Range 5 hPa 9 hPa 18 hPa, 2013 3 hPa, 2024
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]7.6 hrs (84%) [30%] 6 [70%], 2013 0 [0%], 2015
Wet Hours 3
[Mean rain rate: 2.2 mm/h]		4 hrs (63%) [5.6%] 7, 2022 0, 2010
Cloud Cover Overcast
Events None
Comments 08 Moderate Shower; 1630-1730 Moderate/Heavy Rain; 23- Slight 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 3rd 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

day graph

Webcam Summary of Cloud Conditions

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Wind rose