Daily Report for 6th March 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.1 °C (+0.5) 22:26 0.9 °C (-2.6) 8.7 °C (+5.1), 2019 -1.3 °C (-4.9), 2010
Maximum Temperature 9.6 °C (-0.4) 11:51 5.4 °C (-4.4) 16.9 °C (+6.9), 2025 5.8 °C (-4.2), 2021
Mean Temperature 7.3 °C (+0.0) 3.1 °C (-3.5) 10.4 °C, 2019 3.1 °C, 2016
Minimum Humidity 62% 11:50 74% 80%, 2019 43%, 2025
Maximum Humidity 91% 23:11 93% 97%, 2024 69%, 2015
Mean Humidity 81% 86% 89%, 2024 60%, 2015
Minimum Pressure 986 hPa 00:29 990 hPa 1032 hPa, 2021 986 hPa, 2019
Maximum Pressure 992 hPa 23:35 995 hPa 1036 hPa, 2021 992 hPa, 2018
Mean Pressure 989 hPa 992 hPa 1035 hPa, 2021 989 hPa, 2018
Mean Wind Speed 4.1 mph (-1.1) 7.4 mph (+2.2) 9.6 mph, 2019 1.1 mph, 2021
Maximum Wind Speed 11.9 mph 11:13 15.8 mph 21.4 mph, 2019 8.8 mph, 2021
Maximum Gust 17.3 mph 03:03 24.0 mph 31.1 mph, 2019 11.4 mph, 2021
Mean Wind Direction SW
Rainfall 0.4 mm 5.0 mm (66%) 3.5 mm, 2019
Maximum Hourly Rain 0.4 mm 14:49 1.1 mm, 2019
Maximum 10-min Rain 0.2 mm 0.5 mm, 2023
Maximum Rain Rate 1.2 mm/h 14:49 7 mm/h, 2023
Minimum Dew Point 2.3 °C 22:13 -1.1 °C 5.8 °C, 2019 -6.5 °C, 2010
Maximum Dew Point 6.6 °C 00:58 2.9 °C 9.6 °C, 2019 0.7 °C, 2009
Mean Dew Point 4.2 °C 0.8 °C 8.1 °C, 2019 -1.8 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 6.2 °C * 07:08 1.1 °C 8.8 °C, 2019 -0.1 °C, 2023
Day Maximum (09-21) 9.6 °C 11:51 5.2 °C 16.9 °C, 2025 5.8 °C, 2021
Max 10m Temp Rise 0.4 °C 11:39 0.4 °C 1.0 °C, 2025 0.3 °C, 2010
Max 1hr Temp Rise 1.4 °C 11:47 1.2 °C 4.3 °C, 2025 0.9 °C, 2011
Max 1hr Hum Rise 13% 13:54 7% 13%, 2016 3%, 2011
Max 10m Temp Fall 0.4 °C 14:36 0.3 °C 1.1 °C, 2016 0.2 °C, 2017
Max 1hr Temp Fall 1.7 °C 22:02 1.0 °C 2.7 °C, 2016 0.7 °C, 2022
Max 1hr Hum Fall 15% 11:50 8% 15%, 2018 5%, 2019
Max 10m Wind Speed 8.3 mph 12:11 12.0 mph 14.9 mph, 2019 3.1 mph, 2024
Minimum Feels-like 2.3 °C 05:13 -4.6 °C 5.7 °C, 2013 -5.0 °C, 2023
Maximum Feels-like 9.4 °C 12:59 3.5 °C 16.9 °C, 2025 5.6 °C, 2011
Mean Feels-like 5.5 °C -0.9 °C 9.7 °C, 2019 0.4 °C, 2016
Air-frost Hrs 0 hrs 8 hrs 3 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.5 °C (-0.9) 4.5 °C (-1.8) 15.5 °C (+9.1), 2025 3.2 °C (-3.2), 2011
Humidity Range 29% 19% 47%, 2009 11%, 2019
Pressure Range 6 hPa 6 hPa 17 hPa, 2020 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.5 [5%]3.5 hrs (17%) [5.9%] 9.2 [92%], 2009 0 [0%], 2019
Wet Hours 1
[Mean rain rate: 0.4 mm/h]		15 hrs (146%) [10%] 6, 2019 , 2009
Cloud Cover Mostly Cloudy with periods of Overcast
Events None
Comments 12-15 Showers
Extra Comments
Issues None known
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 6th March 2018.
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