Daily Report for 1st April 2014

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.2 °C (+1.9) 07:06 7.2 °C (+1.8) 11.8 °C (+6.5), 2011 -0.9 °C (-6.2), 2020
Maximum Temperature 18.5 °C (+5.7) 17:34 18.5 °C (+5.5) 18.5 °C (+5.7), 2014 5.3 °C (-7.5), 2013
Mean Temperature 13.5 °C (+3.8) 13.5 °C (+3.7) 13.5 °C, 2014 2.4 °C, 2013
Minimum Humidity 47% 18:00 47% 80%, 2023 36%, 2012
Maximum Humidity 95% 08:27 95% 95%, 2014 75%, 2013
Mean Humidity 72% 72% 88%, 2023 56%, 2015
Minimum Pressure 1008 hPa 18:15 1008 hPa 1021 hPa, 2009 998 hPa, 2023
Maximum Pressure 1011 hPa 06:38 1011 hPa 1030 hPa, 2020 1010 hPa, 2010
Mean Pressure 1010 hPa 1010 hPa 1026 hPa, 2021 1005 hPa, 2010
Mean Wind Speed 1.0 mph (-3.9) 1.0 mph (-3.9) 9.2 mph, 2015 1.0 mph, 2014
Maximum Wind Speed 7.1 mph 14:58 7.1 mph 19.7 mph, 2013 7.1 mph, 2014
Maximum Gust 9.7 mph 14:59 9.7 mph 35.4 mph, 2022 9.0 mph, 2012
Mean Wind Direction NNW
Rainfall 1.8 mm 1.8 mm (129%) 2.9 mm, 2018
Maximum Hourly Rain 1.8 mm 01:14 2.2 mm, 2018
Maximum 10-min Rain 1.4 mm 01:11 1.4 mm, 2014
Maximum Rain Rate 20 mm/h 01:08 20 mm/h, 2014
Minimum Dew Point 5.8 °C 07:06 5.8 °C 9.4 °C, 2011 -7.2 °C, 2013
Maximum Dew Point 12.0 °C 11:30 12.0 °C 12.0 °C, 2014 -2.2 °C, 2013
Mean Dew Point 8.2 °C 8.2 °C 10.0 °C, 2011 -4.6 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.2 °C 07:06 7.2 °C 11.8 °C, 2011 -0.9 °C, 2020
Day Maximum (09-21) 18.5 °C 17:34 18.5 °C 18.5 °C, 2014 5.3 °C, 2013
Max 10m Temp Rise 0.8 °C 08:29 0.8 °C 1.2 °C, 2022 0.3 °C, 2011
Max 1hr Temp Rise 3.5 °C 08:56 3.5 °C 4.8 °C, 2016 1.0 °C, 2018
Max 1hr Hum Rise 8% 01:43 8% 23%, 2010 5%, 2011
Max 10m Temp Fall 0.3 °C 02:56 0.3 °C 2.7 °C, 2022 0.3 °C, 2014
Max 1hr Temp Fall 1.4 °C 21:48 1.4 °C 3.4 °C, 2021 0.9 °C, 2023
Max 1hr Hum Fall 11% 15:03 11% 19%, 2016 6%, 2023
Max 10m Wind Speed 4.5 mph 19:04 4.5 mph 14.8 mph, 2022 4.5 mph, 2014
Minimum Feels-like 7.2 °C 07:04 7.2 °C 12.9 °C, 2011 -7.2 °C, 2022
Maximum Feels-like 18.9 °C 14:20 18.9 °C 18.9 °C, 2014 2.1 °C, 2013
Mean Feels-like 14.1 °C 14.1 °C 14.8 °C, 2011 -2.0 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 4 hrs, 2020 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 11.3 °C (+3.8) 11.3 °C (+3.7) 13.9 °C (+6.4), 2009 2.9 °C (-4.6), 2023
Humidity Range 48% 48% 48%, 2012 13%, 2023
Pressure Range 3 hPa 3 hPa 20 hPa, 2023 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [86%]10 hrs (200%) [86%] 11.5 [99%], 2019 0 [0%], 2018
Wet Hours 1
[Mean rain rate: 1.8 mm/h]
1 hrs (65%) [4.2%] 2, 2015 0, 2009
Cloud Cover am: Sunny transitioned to Partly Cloudy
pm: Mostly Sunny
Events None
Comments 01 Shower
Extra Comments
Issues Rn figures adjusted as I forgot to change the WD tip size
Observer Absent? No
Pond Temperature (Heath) 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 1st April 2014.
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