Some parts of Britain could see temperatures slide from 30C to just 15C in little over a week as a huge cyclone could cast a cloud over the start of Wimbledon.
The recent heatwave has seen the mercury soar but weather experts fear the sweltering conditions are going to be a distant memory once the new week gets up and running.
A new cold front will move in by Tuesday, with rain to lash down with some thunderstorms also scheduled.
It means a nip in the air for the start of the Wimbledon championships on Monday, but London will dodge the worst of the bad weather.
The Met Office has warned that a massive cyclone which stretches from Scandinavia to Spain will affect Britain with a three-day washout following a fortnight of sun.
Some will escape with dry spells also ahead but it will be nothing like the searing heat experienced over the past two weeks.
In some parts of Scotland it's going to feel like winter but the southeast and eastern regions of the UK may not notice a big change with slightly warmer temperatures in the the low 20Cs.
Sunny spells and scattered showers are likely to occur on Monday, with some heavy across the north.
Showers will arrive in the west on Tuesday, but by Wednesday the warm weather could start to return.
Nick Finnis, a meteorologist with Netweather.tv said: “It will be windy with outbreaks of rain, locally heavy, pushing in across western areas through Sunday morning.
"The rain will be turning more showery through the afternoon, showers turning heavy with a risk of thunderstorms too – more especially across Northern Ireland and South West Scotland.
“North East Scotland, eastern and southeastern England staying mostly dry and breezy with sunny spells again, though the odd light shower can’t be ruled out.
“Cool in the north and west, temperatures reaching 15-18C, warmer towards eastern England – where temperatures will reach 19-23C.”
Met Office meteorologist Alex Deakin said: “It is turning fresher but there will be plenty of showers around this weekend.”
"It will be very gusty and unseasonably windy for the time of year.”
He added: “After the heat and humidity, it’s all change with low pressure the dominant feature.
“That low pressure system isn’t moving too far and with its isobars fairly tightly packed, it will bring some fairly gusty conditions increasingly to western Scotland, and it will be unseasonably windy in the northwest.
“Then it’s a case of watching the showers develop, the closer you are to that low pressure system the more showers you are likely to see.
“There will be plenty of them across Wales western England and southwest Scotland.”
