Daily Report for 2nd March 2012

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.1 °C (+1.7) 00:48 5.2 °C (+1.7) 8.2 °C (+4.8), 2019 -1.8 °C (-5.2), 2018
Maximum Temperature 9.2 °C (-0.4) 11:52 11.8 °C (+2.1) 14.0 °C (+4.4), 2019 -0.1 °C (-9.7), 2018
Mean Temperature 7.0 °C (+0.6) 8.4 °C (+1.9) 10.8 °C, 2019 -1.3 °C, 2018
Minimum Humidity 80% 13:15 71% 85%, 2022 34%, 2017
Maximum Humidity 97% 09:01 94% 97%, 2012 71%, 2017
Mean Humidity 90% 84% 90%, 2022 55%, 2017
Minimum Pressure 1020 hPa 23:58 1022 hPa 1035 hPa, 2011 982 hPa, 2014
Maximum Pressure 1029 hPa 00:43 1029 hPa 1038 hPa, 2011 995 hPa, 2018
Mean Pressure 1024 hPa 1026 hPa 1036 hPa, 2011 991 hPa, 2020
Mean Wind Speed 3.2 mph (-2.0) 2.6 mph (-2.6) 11.1 mph, 2018 1.6 mph, 2021
Maximum Wind Speed 7.8 mph 7.4 mph 22.0 mph, 2018 7.1 mph, 2010
Maximum Gust 10.2 mph 18:39 9.4 mph 37.0 mph, 2009 9.0 mph, 2010
Mean Wind Direction E
Rainfall 0.0 mm 0.0 mm (0%) 8.6 mm, 2014
Maximum Hourly Rain n/a 3.1, 2014
Maximum 10-min Rain n/a 1, 2024
Maximum Rain Rate n/a 18, 2020
Minimum Dew Point 2.6 °C 00:07 2.6 °C 5.5 °C, 2019 -6.0 °C, 2015
Maximum Dew Point 7.5 °C 10:44 7.8 °C 9.8 °C, 2019 -1.2 °C, 2013
Mean Dew Point 5.4 °C 5.7 °C 7.9 °C, 2019 -3.5 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.1 °C 00:10 5.8 °C 8.0 °C, 2019 -1.7 °C, 2018
Day Maximum (09-21) 9.2 °C 11:52 11.8 °C 14.0 °C, 2019 -0.6 °C, 2018
Max 10m Temp Rise 0.4 °C 10:00 0.4 °C 0.7 °C, 2010 0.2 °C, 2013
Max 1hr Temp Rise 1.6 °C 10:17 1.6 °C 2.7 °C, 2010 0.6 °C, 2013
Max 1hr Hum Rise 4% 20:42 4% 20%, 2020 3%, 2022
Max 10m Temp Fall 0.2 °C 13:49 0.3 °C 1.2 °C, 2020 0.2 °C, 2012
Max 1hr Temp Fall 0.7 °C 16:19 1.5 °C 2.5 °C, 2020 0.4 °C, 2018
Max 1hr Hum Fall 9% 11:23 8% 19%, 2016 3%, 2013
Max 10m Wind Speed 5.7 mph 16:23 5.8 mph 17.3 mph, 2018 5.0 mph, 2021
Minimum Feels-like 3.3 °C 05:15 4.2 °C 5.3 °C, 2019 -10.6 °C, 2018
Maximum Feels-like 9.2 °C 11:56 11.9 °C 14.6 °C, 2019 -3.4 °C, 2018
Mean Feels-like 6.0 °C 7.9 °C 10.4 °C, 2019 -7.8 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 24 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.1 °C (-2.1) 6.7 °C (+0.4) 10.8 °C (+4.6), 2009 1.5 °C (-4.7), 2022
Humidity Range 17% 24% 48%, 2015 10%, 2022
Pressure Range 9 hPa 7 hPa 19 hPa, 2014 3 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [20%]11 hrs (163%) [56%] 10 [101%], 2010 0 [0%], 2018
Wet Hours 00 hrs (0%) [0%] 9, 2022 , 2009
Cloud Cover am: Overcast transitioned to Partly Cloudy
pm: Overcast
Events Dense Fog
Comments <09 Dense Fog
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 2nd March 2012.
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.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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Wind rose