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Daily Report for 4th August 2010

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature13.1 °C (-1.4)23:5914.0 °C (-0.6)18.9 °C (+4.4), 201810.9 °C (-3.6), 2020
Maximum Temperature19.8 °C (-3.4)14:0521.5 °C (-1.8)30.8 °C (+7.6), 202619.4 °C (-3.8), 2023
Mean Temperature16.4 °C (-2.4)17.8 °C (-1.2)23.6 °C, 202616.4 °C, 2010
Minimum Humidity66%12:0452%71%, 202336%, 2014
Maximum Humidity86%21:3181%96%, 202075%, 2014
Mean Humidity77%67%83%, 200954%, 2014
Minimum Pressure1004 hPa14:021011 hPa1022 hPa, 20181004 hPa, 2010
Maximum Pressure1011 hPa00:351015 hPa1026 hPa, 20181011 hPa, 2010
Mean Pressure1008 hPa1013 hPa1024 hPa, 20181008 hPa, 2010
Mean Wind Speed4.9 mph (+0.9)3.7 mph (-0.3)9.7 mph, 20161.2 mph, 2021
Maximum Wind Speed13.8 mph10.6 mph23.2 mph, 20166.4 mph, 2021
Maximum Gust21.9 mph13:2015.6 mph33.9 mph, 201611.4 mph, 2021
Mean Wind Directionn/aWNWNNW, 2023NNE, 2018
Rainfall8.2 mm8.2 mm (118%)11.6 mm, 20110.0 mm, 2013
Maximum Hourly Rain4.4 mm19:201.1 mm4.4 mm, 20100.3 mm, 2012
Maximum 10-min Rain2.2 mm19:200.6 mm2.2 mm, 20100.3 mm, 2012
Maximum Rain Rate50 mm/h19:1712 mm/h50 mm/h, 201015 mm/h, 2011
Minimum Dew Point9.7 °C23:599.6 °C13.2 °C, 20266.8 °C, 2014
Maximum Dew Point14.7 °C13:1513.7 °C18.9 °C, 202612.0 °C, 2017
Mean Dew Point12.3 °C11.4 °C15.9 °C, 20269.1 °C, 2014
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)15.1 °C14.5 °C18.9 °C, 201810.9 °C, 2020
Day Maximum (09-21)19.8 °C21.5 °C30.8 °C, 202619.4 °C, 2023
Max 10m Temp Rise0.5 °C11:180.7 °C1.0 °C, 20200.3 °C, 2009
Max 1hr Temp Rise2.0 °C11:352.3 °C4.8 °C, 20200.7 °C, 2009
Max 1hr Hum Rise11%12:578%27%, 20185%, 2009
Max 10m Temp Fall1.0 °C14:430.7 °C1.0 °C, 20100.2 °C, 2009
Max 1hr Temp Fall3.4 °C15:141.8 °C3.9 °C, 20180.6 °C, 2009
Max 1hr Hum Fall9%01:5711%23%, 20203%, 2009
Max 10m Wind Speed10.4 mph13:098.1 mph16.8 mph, 20165.3 mph, 2021
Minimum Feels-like14.1 °C23:5915.2 °C23.6 °C, 201812.0 °C, 2020
Maximum Feels-like23.5 °C13:5624.0 °C36.0 °C, 202621.6 °C, 2015
Mean Feels-like18.8 °C19.8 °C28.2 °C, 202618.8 °C, 2010
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m30.6 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m317.3 µg/m3, 202617.3 µg/m3, 2026
Mean PM2.5n/a0.0 µg/m38.3 µg/m3, 20268.3 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range6.7 °C (-2.0)7.5 °C13.8 °C, 20263.6 °C, 2011
Humidity Range20%29%56%, 202020%, 2010
Pressure Range7 hPa4 hPa7 hPa, 20252 hPa, 2009
ObservationDetail
Sun Hours2 hrs [14%]
Wet Hours3 hrs
Cloud CoverOvercast with periods of Mostly Cloudy
EventsNone
Comments1230 H? 1430 V? 19 V? 20 M Shwrs
Observer Absent?Yes - observations may be unreliable
Pond Temperature0.0 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 4th August 2010. 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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