Daily Report for 2nd March 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.4 °C (+2.0) 06:46 5.5 °C (+2.1) 8.2 °C (+4.8), 2019 -1.8 °C (-5.2), 2018
Maximum Temperature 10.9 °C (+1.3) 14:13 10.2 °C (+0.6) 14.0 °C (+4.4), 2019 -0.1 °C (-9.7), 2018
Mean Temperature 7.9 °C (+1.7) 7.6 °C (+1.3) 10.8 °C, 2019 -1.3 °C, 2018
Minimum Humidity 34% 16:47 48% 85%, 2022 34%, 2017
Maximum Humidity 71% 23:51 78% 97%, 2012 71%, 2017
Mean Humidity 55% 64% 90%, 2022 55%, 2017
Minimum Pressure 1000 hPa 00:28 998 hPa 1035 hPa, 2011 982 hPa, 2014
Maximum Pressure 1012 hPa 19:10 1006 hPa 1038 hPa, 2011 995 hPa, 2018
Mean Pressure 1006 hPa 1002 hPa 1036 hPa, 2011 991 hPa, 2020
Mean Wind Speed 9.2 mph (+4.0) 7.3 mph (+2.1) 11.1 mph, 2018 1.2 mph, 2025
Maximum Wind Speed 18.8 mph 09:35 18.0 mph 22.0 mph, 2018 7.1 mph, 2010
Maximum Gust 31.4 mph 09:32 29.9 mph 37.0 mph, 2009 9.0 mph, 2010
Mean Wind Direction W
Rainfall 0.0 mm 4.0 mm (159%) 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 -5.1 °C 16:48 -2.4 °C 5.5 °C, 2019 -6.0 °C, 2015
Maximum Dew Point 1.8 °C 23:51 3.2 °C 9.8 °C, 2019 -1.2 °C, 2013
Mean Dew Point -0.9 °C 0.9 °C 7.9 °C, 2019 -3.5 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.4 °C 06:46 5.5 °C 8.0 °C, 2019 -1.7 °C, 2018
Day Maximum (09-21) 10.9 °C 14:13 10.2 °C 14.0 °C, 2019 -0.6 °C, 2018
Max 10m Temp Rise 0.4 °C 07:52 0.3 °C 0.9 °C, 2025 0.2 °C, 2013
Max 1hr Temp Rise 1.3 °C 08:19 1.1 °C 3.4 °C, 2025 0.6 °C, 2013
Max 1hr Hum Rise 7% 23:02 6% 20%, 2020 3%, 2022
Max 10m Temp Fall 0.2 °C 22:03 0.2 °C 1.2 °C, 2020 0.2 °C, 2012
Max 1hr Temp Fall 0.8 °C 22:53 0.9 °C 2.6 °C, 2025 0.4 °C, 2018
Max 1hr Hum Fall 10% 16:44 12% 19%, 2016 3%, 2013
Max 10m Wind Speed 16.9 mph 09:38 15.6 mph 17.3 mph, 2018 4.5 mph, 2025
Minimum Feels-like -0.5 °C 02:31 0.2 °C 5.3 °C, 2019 -10.6 °C, 2018
Maximum Feels-like 10.9 °C 14:07 9.8 °C 14.6 °C, 2019 -3.4 °C, 2018
Mean Feels-like 5.0 °C 5.0 °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 5.5 °C (-0.7) 4.7 °C (-1.5) 10.8 °C (+4.7), 2009 1.5 °C (-4.7), 2022
Humidity Range 37% 29% 48%, 2015 10%, 2022
Pressure Range 12 hPa 8 hPa 19 hPa, 2014 3 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6 [61%]6.8 hrs (101%) [35%] 10 [102%], 2010 0 [0%], 2018
Wet Hours 04 hrs (117%) [8.3%] 9, 2022 , 2009
Cloud Cover am: Partly Cloudy
pm: Mostly Sunny transitioned to Sunny
Events None
Comments -
Extra Comments
Issues 19-22 data loss due to WD crash; ghost tips removed
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 2nd 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