Daily Report for 6th May 2011

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.1 °C (+1.4) 06:07 7.2 °C (-0.3) 12.0 °C (+4.3), 2014 2.8 °C (-4.9), 2021
Maximum Temperature 24.5 °C (+7.9) 16:40 17.9 °C (+1.4) 24.6 °C (+8.0), 2018 8.7 °C (-7.9), 2012
Mean Temperature 17.3 °C (+4.6) 12.7 °C (+0.6) 17.3 °C, 2011 6.8 °C, 2012
Minimum Humidity 32% 18:40 35% 84%, 2023 32%, 2011
Maximum Humidity 70% 07:00 72% 94%, 2023 70%, 2011
Mean Humidity 48% 53% 90%, 2023 48%, 2011
Minimum Pressure 1013 hPa 20:14 1014 hPa 1026 hPa, 2020 1001 hPa, 2015
Maximum Pressure 1017 hPa 01:00 1018 hPa 1027 hPa, 2020 1007 hPa, 2014
Mean Pressure 1015 hPa 1016 hPa 1026 hPa, 2020 1004 hPa, 2015
Mean Wind Speed 4.0 mph (-0.7) 6.5 mph (+1.8) 11.4 mph, 2015 2.0 mph, 2016
Maximum Wind Speed 12.7 mph 14.9 mph 22.5 mph, 2015 8.7 mph, 2016
Maximum Gust 19.9 mph 17:33 22.9 mph 34.2 mph, 2015 13.1 mph, 2010
Mean Wind Direction SSE
Rainfall 0.0 mm 0.0 mm (0%) 12.9 mm, 2015
Maximum Hourly Rain n/a 7.5, 2015
Maximum 10-min Rain n/a 5, 2015
Maximum Rain Rate n/a 78, 2015
Minimum Dew Point 2.0 °C 03:44 -0.6 °C 8.7 °C, 2023 -1.5 °C, 2021
Maximum Dew Point 8.4 °C 11:44 6.1 °C 12.9 °C, 2023 3.1 °C, 2012
Mean Dew Point 5.5 °C 2.9 °C 11.7 °C, 2023 1.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.1 °C 06:05 7.6 °C 12.4 °C, 2014 2.8 °C, 2021
Day Maximum (09-21) 24.5 °C 16:40 17.9 °C 24.6 °C, 2018 8.7 °C, 2012
Max 10m Temp Rise 0.9 °C 08:10 0.7 °C 1.3 °C, 2018 0.4 °C, 2012
Max 1hr Temp Rise 3.9 °C 08:33 3.0 °C 4.1 °C, 2018 1.2 °C, 2012
Max 1hr Hum Rise 5% 01:07 7% 23%, 2021 4%, 2023
Max 10m Temp Fall 0.5 °C 19:21 0.5 °C 1.5 °C, 2021 0.3 °C, 2017
Max 1hr Temp Fall 2.1 °C 19:59 1.7 °C 3.6 °C, 2021 1.1 °C, 2019
Max 1hr Hum Fall 11% 08:57 10% 21%, 2021 6%, 2023
Max 10m Wind Speed 9.6 mph 12:06 10.8 mph 18.0 mph, 2015 6.4 mph, 2016
Minimum Feels-like 8.7 °C 03:51 5.4 °C 12.0 °C, 2014 0.5 °C, 2020
Maximum Feels-like 24.7 °C 16:30 17.9 °C 26.0 °C, 2018 8.7 °C, 2012
Mean Feels-like 17.4 °C 12.2 °C 17.4 °C, 2011 5.4 °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 15.4 °C (+6.5) 10.7 °C (+1.7) 16.8 °C (+7.9), 2018 4.6 °C (-4.3), 2012
Humidity Range 38% 37% 52%, 2022 10%, 2023
Pressure Range 4 hPa 4 hPa 9 hPa, 2015 2 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [73%]65 hrs (184%) [79%] 13.7 [100%], 2018 0 [0%], 2012
Wet Hours 00 hrs (0%) [0%] 7, 2023 0, 2009
Cloud Cover am: Hazy or Mostly Cloudy
pm: Sunny or Hazy
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 6th May 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