September 1919 – Heatwave then snow

Just after the end of WW2, September 1919 was an unusual month as it went from a late summer heatwave to early winter snowfall in the space of few days. A hot southerly flow allowed temperatures to climb as high as 32.2C at Raunds on the 11th September 1919. However by the 12th, the windflow came in from the North Sea and maxima temperatures plunged to the teens. The real dramatic change came on the 18th, when a low pressure system tracked to the north of Scotland, deepened as it moved into the North Sea and a vigorous cold front … [Read more]

The last 5 Septembers in the UK according to Trevor Harley

2016 An extraordinary month. Overall very warm, with a CET of 14.6, making it the second equal warmest September from 1910. The first five days were unsettled, and then southerly winds brought hot humid air to the south. 29.3C was recorded at Gravesend on the 7th. It was slightly cooler from the 8th to the 12th, and then 34.4C was recorded at Gravesend on Tuesday 13th, a real record breaker, in many ways: it is the hottest day of the year; it is remarkably late (you have to go back to 1926 for one later); it is the first time … [Read more]