Cold arctic air is set to move across the UK, triggering a chilly spell when overnight temperatures are predicted to plunge to as low as minus 10C.
Frost will hit areas from Tuesday evening, with snow predicted in parts of Scotland, forecasters say.
It comes as the Met Office and UK Health Security Agency (UKHSA) issued a severe cold weather alert for England and warned the plummeting temperatures could increase health risks to vulnerable people and disrupt deliveries.
Tuesday morning will see showers feeding into northern and eastern coasts from the North Sea, as well as into Northern Ireland and North Wales from the Irish Sea 🌦️
— Met Office (@metoffice) December 5, 2022
Showers will start to become wintry in places across Scotland 🌨️ pic.twitter.com/xreLmnbnnX
Met Office forecaster Dan Stroud told the PA news agency: “We’ve got a spell of showers feeding into North Sea coastal areas during Tuesday. They will turn increasingly wintry across parts of northern Scotland, with accumulations on higher ground.
“Elsewhere, while sunny, there will be a cold feel, with temperatures just below average.
“But with some strong winds it’s going to feel a lot cooler than it actually is.
“Into Tuesday night an organised band of showers will sink south, (with) that wind changing direction and coming in from the north, turning it colder with an increasing risk of some frost, mainly in central and western areas.
“Once that wind rears around to the north, we’re going to pull in that colder arctic air, so the story will be about cold and frost.”
Mr Stroud said day temperatures will range between 4-6C in the north, reaching highs of 8C in the south, while it will drop to as low as -6C overnight.
Temperatures are expected to turn colder across much of the UK late on Wednesday and through Thursday as air from the Arctic spreads south across the country.
Mr Stroud said: “Into Wednesday, (there will be) frequent showers across north Scotland, some of those locally heavy, with snow away from the coast. Some accumulations are possible.
“It will start to feel very cold, with wintry showers moving in to parts of Northern Ireland and eastern England.”
Met Office deputy chief meteorologist Rebekah Sherwin added: “We can expect to see some snow and wintry showers further south as the week progresses, particularly in coastal areas or over higher ground.
“There will be widespread frosts with temperatures falling to as low as minus 10C overnight in isolated spots by the end of the week.”
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