It comes after temperatures plummeted to minus 18.9C on Saturday morning in Altnaharra, Scotland, and was the UK’s coldest January night in 15 years.
Temperatures in the Highland village reached –12C on Saturday night.
The average low in northern Scotland for this time of year is about 0.3C, while for England, overnight lows are about 1.5C to 1.6C.
The cold weather saw skaters take to a Glasgow pond on Saturday, which was transformed into a temporary ice rink by days of sub-zero temperatures.
The boating pond in the city’s Queens Park has become popular with winter sports fans in during cold snaps when it freezes over enough to carry people’s weight.
However, the temperature is set to climb in the coming days as a thaw sets in, with the freezing conditions across Scotland coming to an end on Sunday – and temperatures rising to a comparatively balmy 12C by the middle of the week.
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Met Office meteorologist Greg Dewhurst said that overnight on Sunday is when the milder air will arrive, by the end of the night temperatures in western Scotland could be between 9C and 10C, while most places will be between minus 1C and 3C, which is not as cold compared to recent nights, he added.
Next week is set to start with a north and south split with the temperatures and weather, with Northern Ireland and Scotland seeing cloudy weather with outbreaks patchy rain,
Mr Dewhurst said: “(It will be) back to average temperatures generally for the time of year.”