The balmy highs of recent weeks are becoming but a distant memory for many Britons, as rain begins to pound much of the country.
Friday will see a spell of heavy rain in London and the south east, as the mercury nudges 8C in the capital, but scattered sunshine and showers in a chilly 1-2C in Newcastle and Scotland.
Thanks to a low pressure system coming out of the continent, the muggy, damp conditions will continue through to Saturday.
But come Sunday and Monday, up to a month’s worth of rain could fall in some areas over the course of just 24 hours, the Met Office forecaster John West predicts.
Yellow weather warnings are in place between 9pm on Sunday and all the way through to midnight on Monday.
Thick cloud and heavy rain is likely to affect much of eastern, south-eastern and central England, along with strong to gale force northerly winds and it may be cold enough to produce some snow in the Cotswolds, Brecon Beacons and Salisbury Plain, though this is unlikely to settle.
Up to 70mm could fall in places during this period – far overtaking the average rainfall levels of 40-60mm per month for this time of year.
The Met Office warns that spray and flooding could lead to difficult driving conditions and that there is a small chance homes and businesses could be flooded.
Just last week the mercury hit a record-breaking 29C in central London.