A "cold snap" is set to send a deep chill across Britain with heavy rain, snow in high-latitude rural areas, and daytime temperatures dropping under 10C after a spate of unseasonably warm conditions, the Met Office has warned.
Heavy rain is expected to hit Wales on Wednesday before shifting into central and southern parts of England on Friday.
Met Office experts say those further north will see sunshine and showers which will turn heavier and more frequent later in the week.
The cold temperatures are predicted to travel from the north with snow likely for Scottish mountains.
The cold temperatures are predicted to travel from the north with snow likely for Scottish mountains
Met Office
Temperatures across the whole of Britain are set to drop with single digits expected across southern England.
Weather experts added that widespread overnight frost is also likely across many central and northern areas over the weekend.
Met Office Deputy Chief Meteorologist, Brent Walker, said: "As we head through second half of this week cold air will push southwards across the country and there is a risk that showers over mountains of Scotland could turn wintry.
"By the weekend we expect all regions of the UK to be in the cold airmass and overnight frosts are possible.
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"With high pressure continuing to dominate our weather early next week, it will start largely fine, settled, and cool by day, with cold nights and a risk of rural air frosts in places.
"Any early morning mist or fog should clear quickly and there could be a few showers possible around some coasts at times."
It comes after the UK experienced an Indian summer over recent weeks, with a top temperature of 25.8C recorded in London's Kew Gardens on Sunday.
However, in parts of Scotland severe flood warnings with a "risk to life" remained in place until Sunday evening.
Weather experts added that widespread overnight frost is also likely across many central and northern areas over the weekend
NetWeather
Police Scotland said people "faced some of the most challenging conditions ever", after 10 motorists were airlifted to safety on Saturday following a series of landslides on the A83 in Argyll and Bute.
It follows heavy rainfall, which started on Saturday and continued throughout the night.
A Met Office weather warning for rain is still in place in western Scotland until 9pm tonight.
