Yesterday, was the coldest June 28th in the last 139 years of the daily CET series. The mean maximum temperature of just 14.5°C was -4.24°C below the long-term average. The cold day across the country, particularly in the wet east, is what prompted me to write this Colder than Christmas! article yesterday.
June bucks the trend
June, as a month has always bucked the warming trend of recent years that is visible in other months of the 358 year-long monthly CET series. I’ve never seen anyone investigate why this is, which in itself is a bit of a mystery. If you look at the linear trend for the 28th in the top chart, it should come as no surprise that it was cold, because in the last 139 years, mean maximum temperatures for that particular day have fallen by -0.91°C, which is quite astonishing in these days of climate change.
This cold day comes hard on the heels of the recent hot spell that ended just eight days when maximum CET values were 28°C or higher. These daily CET figures are of course still provisional until they are confirmed at the start of next month by the Met Office.