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Daily Report for 8th September 2013

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature8.2 °C (-4.1)05:4212.4 °C (-0.2)17.4 °C (+5.1), 20236.9 °C (-5.4), 2019
Maximum Temperature17.6 °C (-2.8)12:1222.5 °C (+1.6)29.7 °C (+9.3), 202316.0 °C (-4.4), 2015
Mean Temperature12.6 °C (-3.4)17.1 °C (+0.7)23.2 °C, 202312.1 °C, 2019
Minimum Humidity47%12:1646%80%, 202224%, 2012
Maximum Humidity93%07:2888%97%, 202282%, 2016
Mean Humidity74%69%91%, 202254%, 2012
Minimum Pressure1016 hPa10:451017 hPa1025 hPa, 2015996 hPa, 2017
Maximum Pressure1018 hPa14:551022 hPa1031 hPa, 20151007 hPa, 2017
Mean Pressure1017 hPa1019 hPa1028 hPa, 20151000 hPa, 2017
Mean Wind Speed3.7 mph (-0.2)3.3 mph (-0.6)6.6 mph, 20160.7 mph, 2024
Maximum Wind Speed15.2 mph13:0710.4 mph22.3 mph, 20165.9 mph, 2014
Maximum Gust23.5 mph13:0714.9 mph33.9 mph, 20167.6 mph, 2014
Mean Wind Directionn/aWSWN, 2019NNE, 2014
Rainfall0.6 mm4.8 mm (36%)15.8 mm, 20260.0 mm, 2009
Maximum Hourly Rain0.6 mm16:280.4 mm6.0 mm, 20240.6 mm, 2013
Maximum 10-min Rain0.6 mm16:280.2 mm4.1 mm, 20100.5 mm, 2021
Maximum Rain Rate5 mm/h16:281.5 mm/h50 mm/h, 20103.6 mm/h, 2021
Minimum Dew Point6.0 °C01:048.3 °C16.1 °C, 20234.0 °C, 2012
Maximum Dew Point11.3 °C08:4614.3 °C21.7 °C, 20238.9 °C, 2019
Mean Dew Point7.7 °C11.1 °C18.6 °C, 20236.5 °C, 2019
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)8.2 °C05:4212.5 °C17.8 °C, 20166.9 °C, 2019
Day Maximum (09-21)17.6 °C12:1222.3 °C29.7 °C, 202316.0 °C, 2015
Max 10m Temp Rise1.0 °C07:400.7 °C1.2 °C, 20120.3 °C, 2011
Max 1hr Temp Rise4.5 °C08:293.0 °C4.9 °C, 20121.0 °C, 2017
Max 1hr Hum Rise16%13:2410%16%, 20134%, 2020
Max 10m Temp Fall1.4 °C13:140.6 °C1.4 °C, 20130.3 °C, 2015
Max 1hr Temp Fall2.7 °C13:292.0 °C4.0 °C, 20121.1 °C, 2018
Max 1hr Hum Fall18%09:3713%18%, 20135%, 2015
Max 10m Wind Speed11.4 mph13:087.7 mph17.7 mph, 20164.1 mph, 2014
Minimum Feels-like7.5 °C07:2913.6 °C22.1 °C, 20235.3 °C, 2019
Maximum Feels-like17.7 °C10:3624.5 °C38.2 °C, 202317.1 °C, 2015
Mean Feels-like12.9 °C19.1 °C29.8 °C, 202311.8 °C, 2019
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m31.8 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m313.0 µg/m3, 202613.0 µg/m3, 2026
Mean PM2.5n/a0.0 µg/m34.0 µg/m3, 20264.0 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range9.4 °C (+1.3)10.1 °C17.2 °C, 20125.3 °C, 2022
Humidity Range46%42%60%, 201217%, 2022
Pressure Range2 hPa5 hPa11 hPa, 20172 hPa, 2023
ObservationDetail
Sun Hours5.5 hrs [46%]
Wet Hours1 hrs
Cloud Coveram: Sunny transitioned to Mostly Cloudy
pm: Mostly Cloudy
EventsThunder
Comments"13 L Sh; 16 M Sh w Thunder"
Observer Absent?No
Pond Temperature0.0 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 8th September 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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