Daily Report for 22nd March 2024

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 6.0 °C (+1.2) 23:56 6.4 °C (+2.2) 10.1 °C (+5.3), 2023 1.1 °C (-3.7), 2016
Maximum Temperature 11.5 °C (-0.2) 17:09 12.1 °C (+1.4) 19.6 °C (+7.9), 2022 5.1 °C (-6.6), 2013
Mean Temperature 9.9 °C (+0.5) 9.1 °C (+1.8) 13.2 °C, 2022 3.3 °C, 2013
Minimum Humidity 61% 17:42 73% 78%, 2019 38%, 2012
Maximum Humidity 92% 10:09 94% 94%, 2023 81%, 2017
Mean Humidity 79% 86% 84%, 2023 64%, 2015
Minimum Pressure 1016 hPa 23:59 1008 hPa 1036 hPa, 2011 997 hPa, 2014
Maximum Pressure 1023 hPa 00:03 1015 hPa 1040 hPa, 2011 1002 hPa, 2014
Mean Pressure 1019 hPa 1011 hPa 1038 hPa, 2011 999 hPa, 2014
Mean Wind Speed 5.1 mph (-0.1) 5.4 mph (+0.2) 11.3 mph, 2023 1.5 mph, 2016
Maximum Wind Speed 13.6 mph 02:26 13.6 mph 21.2 mph, 2023 6.3 mph, 2016
Maximum Gust 19.6 mph 00:15 21.4 mph 34.6 mph, 2023 10.5 mph, 2016
Mean Wind Direction NW
Rainfall 0.2 mm 43.3 mm (156%) 7.0 mm, 2017
Maximum Hourly Rain 0.2 mm 3.1 mm, 2017
Maximum 10-min Rain 0.2 mm 1.8 mm, 2014
Maximum Rain Rate n/a 36, 2014
Minimum Dew Point 1.6 °C 23:46 4.7 °C 7.9 °C, 2023 -3.1 °C, 2014
Maximum Dew Point 9.4 °C 10:09 8.6 °C 11.1 °C, 2023 1.3 °C, 2013
Mean Dew Point 6.4 °C 6.8 °C 9.1 °C, 2023 -0.8 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 9.7 °C * 04:18 6.8 °C 10.1 °C, 2023 1.1 °C, 2016
Day Maximum (09-21) 11.5 °C 17:09 12.1 °C 19.6 °C, 2022 5.1 °C, 2013
Max 10m Temp Rise 0.3 °C 12:16 0.5 °C 0.9 °C, 2009 0.2 °C, 2019
Max 1hr Temp Rise 0.7 °C 12:27 1.4 °C 3.5 °C, 2016 0.4 °C, 2019
Max 1hr Hum Rise 5% 21:47 6% 18%, 2022 3%, 2019
Max 10m Temp Fall 0.4 °C 11:13 0.4 °C 0.7 °C, 2009 0.2 °C, 2019
Max 1hr Temp Fall 1.3 °C 18:57 1.2 °C 2.2 °C, 2021 0.9 °C, 2019
Max 1hr Hum Fall 9% 13:55 7% 16%, 2012 2%, 2019
Max 10m Wind Speed 10.1 mph 00:54 10.2 mph 15.8 mph, 2023 3.6 mph, 2016
Minimum Feels-like 2.6 °C 23:41 4.2 °C 10.8 °C, 2023 -4.1 °C, 2013
Maximum Feels-like 11.7 °C 10:46 12.7 °C 20.3 °C, 2022 2.6 °C, 2013
Mean Feels-like 9.4 °C 8.7 °C 13.3 °C, 2022 -1.2 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.5 °C (-1.4) 5.7 °C (-0.8) 12.3 °C (+5.4), 2016 2.8 °C (-4.1), 2019
Humidity Range 31% 20% 50%, 2012 6%, 2019
Pressure Range 7 hPa 7 hPa 15 hPa, 2018 2 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1 [9%]47 hrs (60%) [20%] 10 [91%], 2020 0 [0%], 2013
Wet Hours 151 hrs (135%) [9.6%] 8, 2013 , 2009
Cloud Cover unknown
Events None
Comments some early rn
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 10.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 22nd March 2024.
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

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose