Daily Report for 24th March 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.1 °C (+1.2) 06:11 2.8 °C (-1.4) 8.3 °C (+3.4), 2010 -1.0 °C (-5.9), 2014
Maximum Temperature 11.0 °C (-0.9) 13:19 9.4 °C (-1.3) 18.8 °C (+6.9), 2012 0.9 °C (-11.0), 2013
Mean Temperature 8.5 °C (+0.1) 6.2 °C (-1.4) 11.9 °C, 2012 -0.1 °C, 2013
Minimum Humidity 59% 00:06 57% 77%, 2018 33%, 2020
Maximum Humidity 91% 23:42 88% 98%, 2013 69%, 2009
Mean Humidity 74% 75% 88%, 2018 56%, 2009
Minimum Pressure 1009 hPa 22:44 1013 hPa 1030 hPa, 2022 996 hPa, 2023
Maximum Pressure 1015 hPa 01:00 1020 hPa 1038 hPa, 2011 1000 hPa, 2023
Mean Pressure 1012 hPa 1016 hPa 1032 hPa, 2011 999 hPa, 2023
Mean Wind Speed 2.7 mph (-2.5) 4.0 mph (-1.2) 9.0 mph, 2009 0.7 mph, 2022
Maximum Wind Speed 8.4 mph 11:39 10.4 mph 22.8 mph, 2023 7.0 mph, 2022
Maximum Gust 21.0 mph 20:13 18.3 mph 35.0 mph, 2009 10.3 mph, 2022
Mean Wind Direction SW
Rainfall 5.0 mm 31.7 mm (105%) 10.1 mm, 2023
Maximum Hourly Rain 1.3 mm 20:46 4.1 mm, 2023
Maximum 10-min Rain 0.4 mm 20:17 1.7 mm, 2023
Maximum Rain Rate 1.5 mm/h 20:17 30 mm/h, 2023
Minimum Dew Point 0.4 °C 04:05 -1.5 °C 7.4 °C, 2010 -6.0 °C, 2013
Maximum Dew Point 7.4 °C 23:54 5.0 °C 10.2 °C, 2010 0.5 °C, 2013
Mean Dew Point 4.0 °C 1.7 °C 8.6 °C, 2010 -2.6 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 6.1 °C 06:11 3.2 °C 8.3 °C, 2010 -1.0 °C, 2014
Day Maximum (09-21) 11.0 °C 13:19 9.4 °C 18.8 °C, 2012 0.7 °C, 2013
Max 10m Temp Rise 0.3 °C 08:30 0.5 °C 1.0 °C, 2014 0.2 °C, 2013
Max 1hr Temp Rise 1.4 °C 09:13 1.6 °C 4.9 °C, 2014 0.8 °C, 2013
Max 1hr Hum Rise 7% 16:13 7% 15%, 2023 2%, 2013
Max 10m Temp Fall 0.2 °C 13:59 0.4 °C 1.4 °C, 2023 0.2 °C, 2013
Max 1hr Temp Fall 0.8 °C 15:41 1.4 °C 2.8 °C, 2025 0.4 °C, 2013
Max 1hr Hum Fall 3% 11:46 10% 21%, 2019 3%, 2016
Max 10m Wind Speed 5.2 mph 11:39 7.4 mph 17.2 mph, 2023 4.8 mph, 2022
Minimum Feels-like 3.6 °C 06:32 -0.5 °C 6.2 °C, 2010 -8.5 °C, 2013
Maximum Feels-like 11.0 °C 12:55 8.9 °C 18.8 °C, 2012 -1.8 °C, 2013
Mean Feels-like 7.6 °C 4.3 °C 11.9 °C, 2010 -5.1 °C, 2013
Air-frost Hrs 0 hrs 0.3 hrs 12 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.9 °C (-2.1) 6.6 °C (+0.0) 14.3 °C (+7.3), 2022 1.7 °C (-5.3), 2013
Humidity Range 32% 32% 61%, 2022 17%, 2018
Pressure Range 6 hPa 7 hPa 11 hPa, 2011 3 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]78 hrs (90%) [31%] 11.2 [100%], 2020 0 [0%], 2013
Wet Hours 9
[Mean rain rate: 0.6 mm/h]		36 hrs (88%) [6.3%] 9, 2016 , 2009
Cloud Cover Overcast
Events None
Comments pm Rain
Extra Comments
Issues Wind data from Tottenham (TODO: calibration)
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 March 2016.
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