The cold weather comes after the UK was hit by Storm Eleanor, which saw strong gales of up to 100mph, heavy rain and flooding.
The Environment Agency still has four flood warnings and 71 flood alerts in place across the country.
Freezing temperatures and frost are expected to affect much of the country over the weekend.
Rural parts of Scotland will see temperatures drop to -10C tomorrow night with severe overnight frost for Sunday morning.
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“It will feel as low as -19C in places”
Hannah Findley
Northern England will see lows of -6C and the south will see lows of -3C.
But Hannah Findley, forecaster of The Weather Channel, said wind chill will be more severe at high ground and exposed coastlines.
The freeze will feel like -19C, she added.
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She said: "In parts of the Scottish Highlands, the wind chill could make it feel up to 10C colder through the early hours of Monday.
"For much of the British Isles, it is likely to feel near or below freezing throughout the weekend, except the far south-east.
"The coldest places will be in the Highlands of Scotland, which have the double whammy of actual low temperatures due to elevation, combined with high wind speeds, meaning it will feel as low as -19C in places."
SWNS
Findley added that this freeze will continue into Monday morning which may see record cold temperatures.
The forecaster continued: "The lowest actual temperature in the UK is likely to be around -15C early on Monday morning.
"This is close to the record for January 8, which is -16.2C set at Grantown on Spey in the Highlands in 1982."
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Britain has been battered this week by Storm Eleanor.
Gusts as high as 77mph were recorded in High Bradfield, Yorkshire, while the Isle of Wight saw winds of 69mph.
Despite the torrential rain, the Environment Agency has warned there could be a drought this summer.
Stuart Sampson, the water manager at the agency, said: "Despite the recent wet weather at the end of December, we had a dry end to the autumn with rainfall much lower than average in the south east of England.
"Last winter saw low rainfall in the south east which means that groundwater and some reservoirs are below normal levels.
"Above-average rainfall is now needed in parts of this region over the winter months to replenish groundwater supplies for 2018."