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Daily Report for 23rd July 2013

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature19.4 °C (+4.7)03:3114.7 °C (+0.7)19.4 °C (+4.7), 201310.9 °C (-3.8), 2011
Maximum Temperature26.7 °C (+3.4)15:5526.2 °C (+3.2)32.6 °C (+9.3), 201918.0 °C (-5.3), 2011
Mean Temperature22.6 °C (+4.0)20.5 °C (+1.9)25.1 °C, 201814.9 °C, 2011
Minimum Humidity53%17:2239%66%, 202428%, 2012
Maximum Humidity92%08:1280%96%, 201973%, 2012
Mean Humidity72%59%82%, 202349%, 2012
Minimum Pressure1011 hPa17:151020 hPa1022 hPa, 20261001 hPa, 2009
Maximum Pressure1014 hPa04:051025 hPa1026 hPa, 20261006 hPa, 2023
Mean Pressure1012 hPa1022 hPa1024 hPa, 20261004 hPa, 2023
Mean Wind Speed3.0 mph (-1.3)3.7 mph (-0.6)8.0 mph, 20231.7 mph, 2024
Maximum Wind Speed10.7 mph15:3510.6 mph16.5 mph, 20238.0 mph, 2010
Maximum Gust15.2 mph15:3515.3 mph26.5 mph, 202311.4 mph, 2010
Mean Wind Directionn/aSENNW, 2024NNE, 2025
Rainfall12.2 mm13.6 mm (40%)12.2 mm, 20130.0 mm, 2010
Maximum Hourly Rain4.6 mm12:080.3 mm4.6 mm, 20130.2 mm, 2017
Maximum 10-min Rain2.7 mm12:060.1 mm2.7 mm, 20130.2 mm, 2017
Maximum Rain Rate60 mm/h12:062.7 mm/h60 mm/h, 20131.6 mm/h, 2023
Minimum Dew Point13.1 °C00:008.9 °C14.6 °C, 20193.5 °C, 2011
Maximum Dew Point20.8 °C12:5114.3 °C20.8 °C, 201310.7 °C, 2015
Mean Dew Point17.1 °C11.5 °C17.1 °C, 20137.8 °C, 2011
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)19.4 °C03:3114.7 °C19.4 °C, 201310.9 °C, 2011
Day Maximum (09-21)26.7 °C15:5526.2 °C32.6 °C, 201918.0 °C, 2011
Max 10m Temp Rise0.6 °C10:400.7 °C0.9 °C, 20090.5 °C, 2022
Max 1hr Temp Rise2.0 °C10:382.5 °C3.9 °C, 20161.8 °C, 2021
Max 1hr Hum Rise15%01:019%16%, 20185%, 2025
Max 10m Temp Fall0.5 °C00:100.5 °C1.4 °C, 20090.4 °C, 2014
Max 1hr Temp Fall1.8 °C01:032.0 °C2.7 °C, 20091.1 °C, 2024
Max 1hr Hum Fall15%10:4611%15%, 20138%, 2018
Max 10m Wind Speed7.8 mph15:097.5 mph12.7 mph, 20234.0 mph, 2009
Minimum Feels-like23.2 °C23:5716.3 °C23.2 °C, 201311.7 °C, 2011
Maximum Feels-like33.5 °C13:0928.6 °C38.1 °C, 201918.1 °C, 2011
Mean Feels-like28.0 °C22.6 °C30.2 °C, 201915.4 °C, 2011
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m37.3 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m323.1 µg/m3, 202623.1 µg/m3, 2026
Mean PM2.5n/a0.0 µg/m310.2 µg/m3, 202610.2 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range7.3 °C (-1.2)11.4 °C16.7 °C, 20196.4 °C, 2024
Humidity Range39%41%61%, 201927%, 2021
Pressure Range3 hPa5 hPa9 hPa, 20212 hPa, 2016
ObservationDetail
Sun Hours2 hrs [14%]
Wet Hours4 hrs
Cloud Coveram: Overcast
pm: Mostly Cloudy or Hazy
EventsModerate Thunderstorm
Comments"Overnight? 12 T-Ss w T Rn"
Observer Absent?No
Pond Temperature0.0 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 23rd July 2013. Times of extremes use the midpoint of the longest continuous period at that value. Cumulative anomalies are relative to the expected value for the month-to-date. Sun and wet hours are derived from webcam/rainfall analysis and may be adjusted. Data should be viewed with appropriate caution.

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