Daily Report for 26th March 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.3 °C (+0.3) 03:58 6.9 °C (+2.6) 7.9 °C (+2.9), 2016 -0.2 °C (-5.2), 2013
Maximum Temperature 14.9 °C (+2.8) 13:46 12.8 °C (+2.1) 17.8 °C (+5.7), 2012 1.3 °C (-10.8), 2013
Mean Temperature 9.6 °C (+1.6) 9.7 °C (+2.3) 11.4 °C, 2022 0.7 °C, 2013
Minimum Humidity 36% 00:00 55% 74%, 2023 29%, 2020
Maximum Humidity 83% 08:35 83% 98%, 2014 73%, 2013
Mean Humidity 60% 71% 85%, 2023 60%, 2017
Minimum Pressure 1021 hPa 12:15 1009 hPa 1036 hPa, 2012 983 hPa, 2024
Maximum Pressure 1024 hPa 22:57 1018 hPa 1037 hPa, 2012 994 hPa, 2024
Mean Pressure 1023 hPa 1013 hPa 1036 hPa, 2012 988 hPa, 2024
Mean Wind Speed 5.3 mph (+0.1) 5.4 mph (+0.2) 9.4 mph, 2021 2.1 mph, 2019
Maximum Wind Speed 12.1 mph 13:05 13.7 mph 20.3 mph, 2021 9.0 mph, 2019
Maximum Gust 19.9 mph 13:16 21.4 mph 35.9 mph, 2016 12.7 mph, 2019
Mean Wind Direction ENE
Rainfall 0.0 mm 29.7 mm (91%) 11.0 mm, 2024
Maximum Hourly Rain n/a 3.4, 2021
Maximum 10-min Rain n/a 1.7, 2021
Maximum Rain Rate n/a 16, 2010
Minimum Dew Point -8.0 °C 00:00 1.2 °C 4.6 °C, 2024 -8.0 °C, 2017
Maximum Dew Point 5.9 °C 10:51 7.1 °C 11.2 °C, 2016 -4.5 °C, 2013
Mean Dew Point 1.9 °C 4.4 °C 6.8 °C, 2016 -5.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.3 °C 03:58 7.0 °C 9.3 °C, 2021 0.2 °C, 2013
Day Maximum (09-21) 14.9 °C 13:46 12.8 °C 17.8 °C, 2012 1.3 °C, 2013
Max 10m Temp Rise 0.6 °C 10:07 0.5 °C 1.1 °C, 2009 0.1 °C, 2013
Max 1hr Temp Rise 3.0 °C 10:51 1.7 °C 3.4 °C, 2012 0.4 °C, 2013
Max 1hr Hum Rise 13% 02:11 7% 26%, 2014 3%, 2023
Max 10m Temp Fall 0.3 °C 16:59 0.3 °C 1.6 °C, 2014 0.2 °C, 2013
Max 1hr Temp Fall 1.2 °C 19:02 1.1 °C 4.5 °C, 2014 0.5 °C, 2013
Max 1hr Hum Fall 14% 11:03 10% 26%, 2015 3%, 2013
Max 10m Wind Speed 10.0 mph 15:11 10.7 mph 14.9 mph, 2021 6.4 mph, 2019
Minimum Feels-like 2.0 °C 04:45 3.9 °C 3.9 °C, 2016 -6.2 °C, 2013
Maximum Feels-like 14.9 °C 13:42 13.2 °C 17.8 °C, 2012 -1.1 °C, 2013
Mean Feels-like 8.4 °C 8.8 °C 11.1 °C, 2022 -4.0 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0.3 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.6 °C (+2.5) 6.0 °C (-0.6) 14.6 °C (+7.5), 2012 1.5 °C (-5.6), 2013
Humidity Range 47% 28% 60%, 2012 17%, 2013
Pressure Range 3 hPa 9 hPa 20 hPa, 2023 1 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [53%]80 hrs (86%) [29%] 11.3 [101%], 2012 0 [0%], 2013
Wet Hours 021 hrs (48%) [3.4%] 8, 2023 , 2009
Cloud Cover am: Mostly Cloudy transitioned to Sunny
pm: 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 26th March 2017.
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

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose