Temperatures could fall as low as -13C following a yellow alert for snow and ice across parts of Scotland.
The Met Office issued a yellow weather warning from 4pm on Sunday to 11am on Monday.
The worst affected areas will be in the Northern Isles, Moray, parts of Aberdeenshire, the Highlands and the west coast including Lanarkshire and Ayrshire.
Drivers have been warned that the wintry weather could affect the roads.
STV weather presenter Philip Petrie said temperatures could drop as low as -13C on Monday night – the coldest night of the winter so far.
He said: ”On Saturday night temperatures dropped to lows of -11.4C in Dalwhinnie, which meant that on Sunday temperatures were slow to rise during the day with many areas struggling to get above freezing.
“Once again on Sunday night we see widespread frost developing for many central and eastern parts thanks to clear skies and dry conditions, but with further wintry showers expected to move in from the west overnight there is a risk that the rain hitting the frozen ground will turn to ice – possibly causing some travel disruptions through Monday morning.
“The worst affected areas will be the Northern Isles, Moray, the north of Aberdeenshire, the Highlands stretching down the western side of the country down to Lanarkshire, Ayrshire and Dumbartonshire.
“After an initially showery start to the day on Monday, the showers will fizzle out through the evening leaving another dry and clear night – giving the potential for our coldest night of the winter so far. Back at the start of January temperatures reached a low of -12.3C in Loch Glascarnoch, but on Monday night there is the potential for temperatures to drop to -13C.”
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