Daily Report for 1st October 2016

<<Previous Day
Reset 		Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.4 °C (-0.6) 07:51 9.4 °C (-0.5) 15.6 °C (+5.6), 2023 7.2 °C (-2.8), 2018
Maximum Temperature 15.2 °C (-1.5) 15:12 15.2 °C (-1.4) 27.1 °C (+10.4), 2011 13.3 °C (-3.4), 2024
Mean Temperature 11.9 °C (-1.0) 11.9 °C (-0.9) 19.3 °C, 2011 11.1 °C, 2018
Minimum Humidity 65% 16:29 65% 85%, 2024 40%, 2011
Maximum Humidity 84% 05:43 84% 98%, 2010 82%, 2009
Mean Humidity 78% 78% 91%, 2024 66%, 2018
Minimum Pressure 1004 hPa 16:27 1004 hPa 1029 hPa, 2015 993 hPa, 2020
Maximum Pressure 1008 hPa 19:52 1008 hPa 1033 hPa, 2015 1001 hPa, 2020
Mean Pressure 1005 hPa 1005 hPa 1031 hPa, 2015 998 hPa, 2020
Mean Wind Speed 2.8 mph (-1.3) 2.8 mph (-1.3) 7.2 mph, 2017 1.2 mph, 2011
Maximum Wind Speed 14.2 mph 14:45 14.2 mph 17.6 mph, 2022 8.1 mph, 2011
Maximum Gust 22.6 mph 17:32 22.6 mph 29.7 mph, 2021 10.0 mph, 2011
Mean Wind Direction WSW
Rainfall 10.2 mm 10.2 mm (486%) 17.6 mm, 2019
Maximum Hourly Rain 7.7 mm 09:59 10.8 mm, 2019
Maximum 10-min Rain 6.3 mm 09:59 7.0 mm, 2019
Maximum Rain Rate 90 mm/h 09:52 92 mm/h, 2019
Minimum Dew Point 6.4 °C 23:56 6.4 °C 13.4 °C, 2023 2.7 °C, 2018
Maximum Dew Point 10.3 °C 09:23 10.3 °C 18.6 °C, 2023 6.4 °C, 2018
Mean Dew Point 8.2 °C 8.2 °C 16.1 °C, 2023 4.7 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.4 °C 07:51 9.4 °C 15.6 °C, 2023 7.2 °C, 2018
Day Maximum (09-21) 15.2 °C 15:12 15.2 °C 27.1 °C, 2011 13.3 °C, 2024
Max 10m Temp Rise 0.7 °C 08:34 0.7 °C 0.9 °C, 2011 0.2 °C, 2010
Max 1hr Temp Rise 3.3 °C 09:15 3.3 °C 4.4 °C, 2011 0.6 °C, 2010
Max 1hr Hum Rise 6% 17:46 6% 15%, 2019 3%, 2023
Max 10m Temp Fall 0.9 °C 10:47 0.9 °C 1.2 °C, 2019 0.2 °C, 2010
Max 1hr Temp Fall 1.2 °C 19:48 1.2 °C 3.4 °C, 2019 0.3 °C, 2017
Max 1hr Hum Fall 8% 15:36 8% 20%, 2014 3%, 2024
Max 10m Wind Speed 10.7 mph 14:51 10.7 mph 12.6 mph, 2021 5.9 mph, 2025
Minimum Feels-like 6.4 °C 23:43 6.4 °C 18.6 °C, 2023 4.5 °C, 2018
Maximum Feels-like 16.4 °C 15:08 16.4 °C 30.2 °C, 2011 15.1 °C, 2018
Mean Feels-like 12.4 °C 12.4 °C 23.2 °C, 2023 10.3 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.8 °C (-0.9) 5.8 °C (-0.8) 14.8 °C (+8.1), 2011 1.9 °C (-4.8), 2024
Humidity Range 19% 19% 54%, 2011 11%, 2024
Pressure Range 4 hPa 4 hPa 16 hPa, 2022 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [19%]2 hrs (48%) [19%] 10.3 [99%], 2011 0 [0%], 2010
Wet Hours 4
[Mean rain rate: 2.5 mm/h]		4 hrs (253%) [17%] 9, 2010 0, 2009
Cloud Cover Mostly Cloudy with periods of Partly Cloudy
Events None
Comments day Rain/Showers
Extra Comments
Issues Rn data from casa
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 1st October 2016.
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs are derived based on analysis of webcam observations, but may use data from our closest site, Heathrow, when needed.
Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually.
Rainfall totals may be manually adjusted after the fact to correct delayed or erroneous data.
Cloud cover and Events are manually reported, often with multi-week delays.
Data is generally reliable and accurate but should always be viewed with some quantity of salt to hand.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose