The minimum CET return for today, 31 July, is estimated by me at 5.3C
Pershore got down to 2.7C but both Rothamsted and Stonyhurst were well above 6C.
The minimum CET series only goes back to 1878. Today's minimum of 5.3C is the fifth coldest July reading in that series and the coldest for any 31st July. Previous coldest 31 July was 6.5C in 1898.
The coldest July CET minimums are:
4 July 1965 4.7C
11 July 1888 5.1C
12 July 1902 5.1C
8 July 1929 5.2C
31 July 2015 5.3C EST
So today saw the lowest July CET minimum since 1929.
Colder local minimums have been recorded more recently. For example the coldest July minimum in England was on 17 July 1965 with -1.7C at Kielder Castle. But in terms of widespread minimums across the country this morning was probably the coldest start to a July day since 1929.
Looking back at 8 July 1929 it was a very cold day as a wedge of high pressure moved across the UK with winds generally light and northerly. Temperatures widely started the day between 39F and 43F in many places from north to south across the UK with local grass minimums below 32F. Daytime maximums were also low, the highest being right along the south coast with 67F reported at Bournemouth and 66F at Portsmouth, Weymouth and Torquay.
Originally Posted by: Global Warming