Daily Report for 16th October 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.6 °C (+3.9) 00:55 10.7 °C (+1.4) 14.2 °C (+5.5), 2024 1.0 °C (-7.7), 2023
Maximum Temperature 22.1 °C (+7.2) 12:25 17.2 °C (+1.5) 22.1 °C (+7.2), 2017 11.8 °C (-3.1), 2023
Mean Temperature 16.4 °C (+5.6) 14.1 °C (+1.4) 17.1 °C, 2024 6.8 °C, 2023
Minimum Humidity 65% 17:02 67% 85%, 2013 47%, 2012
Maximum Humidity 98% 02:21 91% 98%, 2013 84%, 2016
Mean Humidity 81% 81% 95%, 2013 70%, 2012
Minimum Pressure 1014 hPa 12:31 1015 hPa 1031 hPa, 2009 995 hPa, 2012
Maximum Pressure 1018 hPa 23:00 1021 hPa 1033 hPa, 2009 1004 hPa, 2012
Mean Pressure 1016 hPa 1018 hPa 1032 hPa, 2009 1000 hPa, 2012
Mean Wind Speed 6.8 mph (+2.7) 5.9 mph (+1.8) 7.3 mph, 2012 0.8 mph, 2021
Maximum Wind Speed 20.6 mph 17:07 14.2 mph 22.5 mph, 2012 6.7 mph, 2011
Maximum Gust 31.1 mph 17:21 22.6 mph 31.1 mph, 2017 9.8 mph, 2011
Mean Wind Direction SSW
Rainfall 0.0 mm 2.7 mm (8%) 10.6 mm, 2016
Maximum Hourly Rain n/a 7.3, 2016
Maximum 10-min Rain n/a 5.8, 2016
Maximum Rain Rate n/a 120, 2016
Minimum Dew Point 8.4 °C 23:57 8.2 °C 13.4 °C, 2024 0.0 °C, 2023
Maximum Dew Point 16.4 °C 10:09 13.0 °C 18.1 °C, 2024 8.1 °C, 2023
Mean Dew Point 13.0 °C 10.7 °C 15.6 °C, 2024 4.2 °C, 2023
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 12.6 °C 00:55 11.2 °C 14.2 °C, 2024 1.0 °C, 2023
Day Maximum (09-21) 22.1 °C 12:25 17.2 °C 22.1 °C, 2017 11.8 °C, 2023
Max 10m Temp Rise 0.8 °C 09:34 0.5 °C 1.0 °C, 2011 0.2 °C, 2015
Max 1hr Temp Rise 3.1 °C 10:06 1.6 °C 4.3 °C, 2011 0.7 °C, 2015
Max 1hr Hum Rise 5% 13:39 6% 11%, 2019 2%, 2013
Max 10m Temp Fall 0.4 °C 16:59 0.4 °C 0.5 °C, 2010 0.2 °C, 2015
Max 1hr Temp Fall 1.4 °C 15:41 1.3 °C 2.4 °C, 2019 0.5 °C, 2023
Max 1hr Hum Fall 18% 11:08 8% 18%, 2017 4%, 2015
Max 10m Wind Speed 15.8 mph 17:11 10.8 mph 15.9 mph, 2016 5.0 mph, 2011
Minimum Feels-like 14.4 °C 23:55 10.7 °C 17.2 °C, 2024 0.0 °C, 2009
Maximum Feels-like 26.6 °C 12:21 19.7 °C 27.2 °C, 2024 0.0 °C, 2009
Mean Feels-like 19.3 °C 15.8 °C 21.5 °C, 2024 0.0 °C, 2009
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 9.5 °C (+3.3) 6.5 °C (+0.1) 12.6 °C (+6.4), 2011 2.5 °C (-3.7), 2015
Humidity Range 33% 24% 48%, 2012 10%, 2021
Pressure Range 4 hPa 6 hPa 10 hPa, 2010 1 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4 [42%]52 hrs (82%) [33%] 7 [73%], 2012 0 [0%], 2015
Wet Hours 03.5 hrs (14%) [0.9%] 4, 2013 0, 2011
Cloud Cover am: Hazy or Sunny
pm: Hazy or Overcast
Events None
Comments -
Extra Comments Funky pm sky colour due to dust from forest fires / Sahara dragged North by ex-hurricane Ophelia
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 16th October 2017.
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