Daily Report for 28th June 2018

<<Previous Day
Reset
Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.2 °C (-0.7) 03:43 12.7 °C (+0.7) 18.2 °C (+5.3), 2023 11.1 °C (-1.8), 2016
Maximum Temperature 26.8 °C (+4.8) 16:21 23.2 °C (+2.3) 29.8 °C (+7.8), 2010 16.2 °C (-5.8), 2017
Mean Temperature 18.8 °C (+2.0) 17.8 °C (+1.5) 22.5 °C, 2010 14.8 °C, 2017
Minimum Humidity 44% 16:59 48% 82%, 2021 28%, 2010
Maximum Humidity 90% 08:08 87% 97%, 2009 71%, 2010
Mean Humidity 70% 69% 92%, 2021 47%, 2010
Minimum Pressure 1023 hPa 16:56 1019 hPa 1023 hPa, 2018 997 hPa, 2017
Maximum Pressure 1027 hPa 10:22 1022 hPa 1028 hPa, 2019 1003 hPa, 2017
Mean Pressure 1025 hPa 1020 hPa 1025 hPa, 2018 998 hPa, 2017
Mean Wind Speed 4.9 mph (+0.5) 4.3 mph (-0.1) 9.3 mph, 2020 3.1 mph, 2011
Maximum Wind Speed 12.7 mph 17:24 11.3 mph 19.7 mph, 2020 7.9 mph, 2017
Maximum Gust 18.4 mph 15:25 17.5 mph 32.3 mph, 2020 12.5 mph, 2014
Mean Wind Direction NE
Rainfall 0.0 mm 0.8 mm (2%) 9.4 mm, 2021
Maximum Hourly Rain n/a 6.3, 2011
Maximum 10-min Rain n/a 3, 2011
Maximum Rain Rate n/a 42, 2020
Minimum Dew Point 9.9 °C 02:50 8.6 °C 15.9 °C, 2023 5.1 °C, 2016
Maximum Dew Point 16.8 °C 13:50 13.9 °C 19.9 °C, 2012 11.8 °C, 2016
Mean Dew Point 12.7 °C 11.4 °C 17.1 °C, 2023 8.4 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 12.2 °C 03:45 12.7 °C 18.5 °C, 2011 11.1 °C, 2016
Day Maximum (09-21) 26.8 °C 16:22 23.2 °C 29.8 °C, 2010 16.2 °C, 2017
Max 10m Temp Rise 0.7 °C 11:40 0.7 °C 1.1 °C, 2009 0.2 °C, 2017
Max 1hr Temp Rise 3.0 °C 11:15 2.5 °C 3.0 °C, 2018 0.5 °C, 2017
Max 1hr Hum Rise 7% 22:40 10% 20%, 2016 1%, 2017
Max 10m Temp Fall 0.7 °C 17:49 0.5 °C 1.1 °C, 2020 0.2 °C, 2017
Max 1hr Temp Fall 1.8 °C 18:38 1.9 °C 2.9 °C, 2016 0.6 °C, 2017
Max 1hr Hum Fall 11% 15:09 12% 20%, 2009 3%, 2017
Max 10m Wind Speed 10.1 mph 17:32 8.6 mph 16.7 mph, 2020 5.6 mph, 2011
Minimum Feels-like 13.4 °C 03:36 13.7 °C 22.9 °C, 2023 11.1 °C, 2016
Maximum Feels-like 30.5 °C 16:18 25.8 °C 35.2 °C, 2012 19.4 °C, 2017
Mean Feels-like 21.5 °C 19.8 °C 26.4 °C, 2012 16.4 °C, 2016
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 14.6 °C (+5.6) 10.5 °C (+1.6) 14.6 °C (+5.6), 2018 3.5 °C (-5.5), 2017
Humidity Range 46% 39% 54%, 2012 10%, 2017
Pressure Range 4 hPa 3 hPa 14 hPa, 2016 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [46%]206 hrs (114%) [49%] 14.5 [96%], 2010 0 [0%], 2017
Wet Hours 03.5 hrs (10%) [0.5%] 7, 2017 0, 2010
Cloud Cover am: Overcast transitioned to Sunny
pm: Partly Cloudy transitioned to Sunny
Events None
Comments -
Extra Comments
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 28th June 2018.
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

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose