BRITS should brace for an -8C plunge that will bring up to five days of “difficult conditions”.
Snow and ice overnight affected rush hour travel on Friday morning, with forecasters warning the "chopping and changing" weather is set to stick around into next week.
And weather maps from WXCharts show the mercury could plunge as low as -8C in Scotland.
Other areas of the UK could hit freezing, hovering around zero degrees.
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Yellow weather warnings are in place for Northern Ireland, Scotland and North East England until around 9am on Friday.
Forecasters warned icy stretches are likely to form on untreated roads amid the near-freezing temperatures.
The Met Office urged people not to cycle and to take extra care when driving or walking, and warned of possible longer journey times on roads and railways.
More snowfall is expected to hit hilltops in some parts, while gusty winds mean blizzards are possible on higher routes.
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A cold start is set for today, with frost in places - especially the North West, set to make way for a drier and brighter day with sunny spells.
Met Office chief meteorologist Frank Saunders said: "A ridge of high pressure builds on Friday resulting in a fine, bright day for most.
"However, the winds pick up again as we head into the weekend with weather fronts bringing rain to the north and west and milder air spreads back in here".
The Met Office said the unsettled blustery weather will stay around over the coming days, especially in the north west, although conditions are not expected to be as severe as during the past week.
A number of weather fronts are set to cross the North, and bring bouts of wet and windy weather - while southern and eastern areas are in line for the best of the fine weather over the weekend.
It described the jet stream, which has been driving storm systems across the North Atlantic Ocean in recent weeks, as still being very active but these winds are shifting further north and may allow for more settled weather to arrive next week.
Meteorologist Alex Deakin said the weather will "remain pretty lively over the next certainly four or five days, chopping and changing day-on-day".
Saturday is expected to be breezy, while people in the northwest have been told to brace for further strong winds and heavy rain on Sunday.
After a spell of rain across the UK on Monday, calmer weather is forecast from Tuesday, though clear skies could bring frosty mornings, the Met Office said.
The last week has seen storms Dudley, Eunice and Franklin cause problems across the country and about 400 properties have been flooded.
The Environment Agency had 31 flood warnings and 30 flood alerts in place on Thursday night.
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Earlier on Thursday, snow shuttered schools in some Scottish areas and caused difficult driving conditions.
Schools were also forced to close and travellers faced disruption after much of Northern Ireland was blanketed by overnight snow