Daily Report for 14th January 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.2 °C (-0.8) 23:58 4.7 °C (+1.6) 7.8 °C (+4.8), 2011 -2.9 °C (-5.9), 2012
Maximum Temperature 5.2 °C (-2.6) 00:37 8.7 °C (+0.9) 12.9 °C (+5.1), 2020 2.4 °C (-5.4), 2013
Mean Temperature 3.5 °C (-1.7) 6.9 °C (+1.2) 10.5 °C, 2011 0.7 °C, 2012
Minimum Humidity 58% 19:13 79% 98%, 2010 58%, 2015
Maximum Humidity 89% 07:12 91% 98%, 2010 81%, 2019
Mean Humidity 77% 86% 98%, 2010 74%, 2015
Minimum Pressure 1003 hPa 06:46 989 hPa 1034 hPa, 2025 992 hPa, 2015
Maximum Pressure 1013 hPa 23:32 1001 hPa 1040 hPa, 2022 1000 hPa, 2020
Mean Pressure 1006 hPa 994 hPa 1037 hPa, 2022 997 hPa, 2020
Mean Wind Speed 7.6 mph (+2.4) 5.8 mph (+0.6) 11.5 mph, 2020 0.1 mph, 2022
Maximum Wind Speed 16.3 mph 14:40 15.5 mph 27.9 mph, 2020 4.3 mph, 2022
Maximum Gust 26.8 mph 14:40 23.3 mph 42.6 mph, 2020 7.4 mph, 2012
Mean Wind Direction W
Rainfall 2.0 mm 50.6 mm (190%) 25.2 mm, 2021
Maximum Hourly Rain 1.3 mm 01:15 5.5 mm, 2011
Maximum 10-min Rain 0.6 mm 00:58 3.8 mm, 2011
Maximum Rain Rate 3.6 mm/h 00:58 40 mm/h, 2011
Minimum Dew Point -4.8 °C 20:36 2.3 °C 6.7 °C, 2011 -4.8 °C, 2016
Maximum Dew Point 3.3 °C 01:51 6.7 °C 11.5 °C, 2020 0.5 °C, 2017
Mean Dew Point -0.4 °C 4.7 °C 9.3 °C, 2011 -1.7 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 2.4 °C * 07:38 5.1 °C 11.3 °C, 2011 -2.9 °C, 2012
Day Maximum (09-21) * 4.5 °C * 14:31 8.5 °C 12.9 °C, 2020 2.4 °C, 2013
Max 10m Temp Rise 0.3 °C 10:27 0.3 °C 0.5 °C, 2012 0.1 °C, 2011
Max 1hr Temp Rise 1.0 °C 10:49 1.1 °C 2.3 °C, 2022 0.2 °C, 2021
Max 1hr Hum Rise 4% 21:52 3% 14%, 2015 0%, 2010
Max 10m Temp Fall 0.2 °C 02:47 0.4 °C 1.5 °C, 2021 0.1 °C, 2025
Max 1hr Temp Fall 0.8 °C 03:45 1.2 °C 3.9 °C, 2021 0.3 °C, 2025
Max 1hr Hum Fall 10% 17:01 5% 13%, 2014 0%, 2010
Max 10m Wind Speed 11.9 mph 14:37 11.4 mph 20.9 mph, 2020 3.7 mph, 2022
Minimum Feels-like -4.0 °C 21:45 1.2 °C 5.3 °C, 2011 -6.2 °C, 2017
Maximum Feels-like 3.8 °C 00:17 8.4 °C 14.9 °C, 2020 1.6 °C, 2013
Mean Feels-like -0.5 °C 4.8 °C 10.9 °C, 2011 -1.4 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 10 hrs, 2012 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.0 °C (-1.8) 4.0 °C (-0.7) 8.4 °C (+3.6), 2022 2.3 °C (-2.5), 2009
Humidity Range 31% 13% 31%, 2015 0%, 2010
Pressure Range 10 hPa 12 hPa 18 hPa, 2023 3 hPa, 2025
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.4 [5%]16 hrs (54%) [16%] 7.4 [100%], 2012 0 [0%], 2009
Wet Hours 4
[Mean rain rate: 0.5 mm/h]		53 hrs (174%) [16%] 14, 2021 , 2009
Cloud Cover Mostly Cloudy
Events None
Comments o.night Rain; day 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 14th January 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