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Daily Report for 7th July 2011

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature14.1 °C (+0.4)12:4213.0 °C (-0.4)19.2 °C (+5.5), 20269.4 °C (-4.3), 2020
Maximum Temperature18.6 °C (-4.1)17:1922.2 °C (-0.3)32.4 °C (+9.6), 202617.8 °C (-4.9), 2024
Mean Temperature15.9 °C (-1.9)17.8 °C (-0.4)25.8 °C, 202614.2 °C, 2024
Minimum Humidity60%18:3041%75%, 200929%, 2026
Maximum Humidity85%13:1077%94%, 201957%, 2026
Mean Humidity74%58%88%, 200943%, 2026
Minimum Pressure1003 hPa11:291012 hPa1030 hPa, 20131002 hPa, 2009
Maximum Pressure1005 hPa11:371016 hPa1033 hPa, 20221005 hPa, 2011
Mean Pressure1004 hPa1014 hPa1031 hPa, 20131004 hPa, 2011
Mean Wind Speed7.7 mph (+3.4)4.4 mph (+0.1)7.7 mph, 20112.4 mph, 2018
Maximum Wind Speed17.3 mph11.8 mph18.1 mph, 20159.8 mph, 2013
Maximum Gust25.1 mph09:5416.5 mph28.4 mph, 201513.0 mph, 2014
Mean Wind Directionn/aSWN, 2022NNE, 2025
Rainfall3.5 mm8.9 mm (86%)11.0 mm, 20250.0 mm, 2010
Maximum Hourly Rain1.9 mm12:130.6 mm4.4 mm, 20240.9 mm, 2019
Maximum 10-min Rain1.4 mm11:230.4 mm1.7 mm, 20090.2 mm, 2019
Maximum Rain Rate20 mm/h11:167 mm/h33 mm/h, 20091.3 mm/h, 2019
Minimum Dew Point9.6 °C10:216.2 °C11.9 °C, 20094.7 °C, 2015
Maximum Dew Point14.0 °C14:5911.5 °C17.5 °C, 201811.1 °C, 2014
Mean Dew Point11.1 °C8.8 °C15.0 °C, 20189.4 °C, 2014
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)14.6 °C05:4513.1 °C19.2 °C, 20269.4 °C, 2020
Day Maximum (09-21)18.6 °C17:2022.2 °C32.4 °C, 202617.8 °C, 2024
Max 10m Temp Rise0.6 °C14:540.6 °C0.9 °C, 20230.5 °C, 2015
Max 1hr Temp Rise1.8 °C15:392.6 °C4.2 °C, 20231.5 °C, 2021
Max 1hr Hum Risen/a11:2011%22%, 20205%, 2021
Max 10m Temp Fall0.3 °C11:160.4 °C1.9 °C, 20240.3 °C, 2010
Max 1hr Temp Fall1.2 °C11:321.4 °C4.2 °C, 20241.2 °C, 2010
Max 1hr Hum Fall7%10:209%17%, 20237%, 2010
Max 10m Wind Speed12.4 mph10:028.2 mph15.0 mph, 20157.4 mph, 2017
Minimum Feels-like15.8 °C12:4113.7 °C21.9 °C, 20178.0 °C, 2020
Maximum Feels-like20.8 °C16:2323.1 °C35.5 °C, 202620.3 °C, 2024
Mean Feels-like17.7 °C18.7 °C28.3 °C, 201816.1 °C, 2024
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m30.1 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m328.3 µg/m3, 202628.3 µg/m3, 2026
Mean PM2.5n/a0.0 µg/m37.7 µg/m3, 20267.7 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range4.5 °C (-4.6)9.1 °C18.8 °C, 20234.2 °C, 2009
Humidity Range25%36%54%, 201818%, 2009
Pressure Range2 hPa4 hPa10 hPa, 20212 hPa, 2018
ObservationDetail
Sun Hours2 hrs [13%]
Wet Hours2 hrs
Cloud Coveram: Overcast or Mostly Cloudy
pm: Partly Cloudy with periods of Mostly Cloudy
EventsNone
Comments11?1230 M/H? 13-15 L Shs
Observer Absent?Yes - observations may be unreliable
Pond Temperature0.0 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 7th July 2011. 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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