May was quite an average month in Watford but over the UK it was another above average month temperature wise with the CET running 2.1c above the long term average. The 5th month in a row this has been the case and also the 2nd warmest May in the UK series. The highest temperature in the UK at an official site was 28.6 °C at Blackpool (Lancashire).
It was a mostly dry month in Watford with most of the rain falling on the 17th. This has lead to a very dry spring.
Summary for May 2017 in Watford
Temperature (°C):
Mean (1 minute) 15.2
Mean (min+max) 15.8
Mean Minimum 9.5
Mean Maximum 22.0
Minimum 0.2 day 09
Maximum 29.3 day 21
Highest Minimum 22.0 day 26
Lowest Maximum 13.7 day 08
Air frosts 0
Rainfall (mm):
Total for month 37.5
Wettest day 19.2 day 17
High rain rate 50.4 day 17
Rain days 12
Dry days 19
Wind (mph):
Highest Gust 9.2 day 08
Average Speed 0.3
Wind Run 384.4 miles
Gale days 0
Pressure (mb):
Maximum 1036.7 day 24
Minimum 1001.9 day 11
Links
Met Office CET – https://www.metoffice.gov.uk/hadobs/hadcet/cet_info_mean.html
Weatheronline – https://www.theweatheroutlook.com/twocommunity/
