The Weather Outlook

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Pogman
02 July 2025 09:31:32
Today in the East Mids it's a fair bit cooler than it was yesterday. This got me thinking, what's the largest recorded high temperature difference between two consecutive days in the UK (at the same location)? Google results for this weren't very forthcoming although I did find this post on this forum about the largest difference within one day:

https://www.theweatheroutlook.com/twocommunity/Posts/t19763-Diurnal-temperature-variation-record 

My related questions would be, what's the largest low temperature difference between two consecutive days, the largest average temperature difference between two consecutive days, and the largest temperature difference between two consecutive days for the same measurement time? Today and yesterday aren't going to break any records (it's only 7-9C difference between those questions) but I'd be interested to know this trivia :^)

lanky
02 July 2025 11:25:40

Today in the East Mids it's a fair bit cooler than it was yesterday. This got me thinking, what's the largest recorded high temperature difference between two consecutive days in the UK (at the same location)? Google results for this weren't very forthcoming although I did find this post on this forum about the largest difference within one day:

https://www.theweatheroutlook.com/twocommunity/Posts/t19763-Diurnal-temperature-variation-record 

My related questions would be, what's the largest low temperature difference between two consecutive days, the largest average temperature difference between two consecutive days, and the largest temperature difference between two consecutive days for the same measurement time? Today and yesterday aren't going to break any records (it's only 7-9C difference between those questions) but I'd be interested to know this trivia :^)

Originally Posted by: Pogman 

My Kew Gardens database 1881-2022 comes up with 12th-13th April 2020 as the biggest drop in day maxima for a single day interval for that site - I guess other sites could be larger than that

24.9C on 12th to 11.4C on the 13th - a drop of 13.5C max

(I ought to be able to recall that one but it didn't ring any bells for me)


Martin

Richmond, Surrey

westv
02 July 2025 11:49:28

I'd be interested to know the single biggest drop in one day 00:00 to 23:59.


Big heat in May

Summer will be spray.

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