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Daily Report for 6th July 2021

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature13.2 °C (-0.4)23:5414.1 °C (+0.7)18.1 °C (+4.5), 201710.5 °C (-3.1), 2016
Maximum Temperature18.1 °C (-4.6)15:0121.5 °C (-1.0)32.4 °C (+9.7), 202616.4 °C (-6.3), 2024
Mean Temperature15.2 °C (-2.5)17.5 °C (-0.1)25.5 °C, 202613.9 °C, 2024
Minimum Humidity68%15:1162%68%, 202121%, 2026
Maximum Humidity94%00:5692%97%, 202468%, 2010
Mean Humidity86%79%86%, 202147%, 2026
Minimum Pressure994 hPa07:321007 hPa1028 hPa, 2013994 hPa, 2021
Maximum Pressure1008 hPa23:331014 hPa1031 hPa, 20131007 hPa, 2011
Mean Pressure1001 hPa1011 hPa1029 hPa, 20131001 hPa, 2021
Mean Wind Speed6.4 mph (+2.1)3.9 mph (-0.4)8.3 mph, 20111.7 mph, 2018
Maximum Wind Speed14.6 mph02:4212.1 mph19.4 mph, 20117.4 mph, 2013
Maximum Gust21.7 mph02:4117.9 mph30.0 mph, 202611.6 mph, 2019
Mean Wind Directionn/aWSWNNW, 2019N, 2018
Rainfall9.4 mm15.6 mm (175%)24.2 mm, 20240.0 mm, 2010
Maximum Hourly Rain2.0 mm01:010.7 mm10.8 mm, 20240.5 mm, 2014
Maximum 10-min Rain0.7 mm12:560.3 mm6.5 mm, 20240.3 mm, 2011
Maximum Rain Rate4.8 mm/h12:521.9 mm/h72 mm/h, 20241.0 mm/h, 2011
Minimum Dew Point11.0 °C23:2911.8 °C11.8 °C, 20185.0 °C, 2010
Maximum Dew Point14.3 °C01:3515.5 °C17.4 °C, 20259.3 °C, 2010
Mean Dew Point12.8 °C13.7 °C14.6 °C, 20187.3 °C, 2016
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)13.4 °C07:0414.3 °C18.1 °C, 201710.5 °C, 2016
Day Maximum (09-21)18.1 °C15:4521.5 °C32.4 °C, 202616.4 °C, 2024
Max 10m Temp Rise0.8 °C16:080.7 °C0.8 °C, 20090.5 °C, 2010
Max 1hr Temp Rise2.5 °C14:512.3 °C3.1 °C, 20131.6 °C, 2025
Max 1hr Hum Rise12%16:0811%20%, 20185%, 2010
Max 10m Temp Fall1.2 °C15:260.7 °C1.2 °C, 20090.4 °C, 2010
Max 1hr Temp Fall2.1 °C15:481.9 °C3.2 °C, 20171.3 °C, 2010
Max 1hr Hum Fall15%15:0811%15%, 20217%, 2022
Max 10m Wind Speed11.2 mph17:179.0 mph13.5 mph, 20265.0 mph, 2019
Minimum Feels-like15.0 °C23:5116.6 °C21.1 °C, 202610.5 °C, 2016
Maximum Feels-like21.2 °C14:4825.4 °C36.3 °C, 201720.6 °C, 2024
Mean Feels-like17.9 °C20.7 °C27.9 °C, 202615.9 °C, 2024
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m30.4 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m310.4 µg/m3, 202610.4 µg/m3, 2026
Mean PM2.5n/a0.0 µg/m32.5 µg/m3, 20262.5 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range4.9 °C (-4.2)7.3 °C15.3 °C, 20134.9 °C, 2021
Humidity Range26%30%57%, 201819%, 2022
Pressure Range14 hPa6 hPa14 hPa, 20212 hPa, 2023
ObservationDetail
Sun Hours2 hrs [13%]
Wet Hours7 hrs
Cloud CoverOvercast with periods of Partly Cloudy
EventsNone
CommentsShs
Observer Absent?Yes - observations may be unreliable
Pond Temperature19.0 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 6th July 2021. 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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