The Met Office has issued an alert for ice and wintry showers with the possibility of snow in some areas.
The weather gurus said: "Strengthening west-northwesterly winds will bring increasingly frequent wintry showers to parts of Scotland through Sunday night and into Monday morning.
"These may fall as snow to low levels for a time where temporary accumulations of 1-3 cm are possible, with 5-10 cm of snow over the hills.
Most of Scotland will bear the brunt of cold conditions and affected areas include Edinburgh, Aberdeenshire Moray, Lothian and Strathclyde.
The latest warning is in place from 9pm tonight and is set to last until 6pm on Boxing Day.
Showers are expected to continue within the warning areas throughout Monday and a further 10cm of snow is possible in Highland areas.
"Icy surfaces will be an additional hazard, especially across parts of Western Scotland later in the night where showers will fall as rain or sleet," they said.
"Snow showers will extend to central and southern parts of Scotland by Monday morning, although any lying snow will be confined to higher ground."
People have been warned to watch for icy conditions on the road and journeys could take longer.
There will "probably some icy patches on some untreated roads, pavements and cycle paths," they said.
The meteorologists warned there could be a "very small chance of interruptions to power supplies."
A yellow ice warning is also in place for Northern Ireland from midnight on Boxing Day until 10am.
People have been advised to watch out for icy roads and "some injuries from slips and falls on icy surfaces."
Experts had warned of grim weather for Brits over the Christmas period ahead of a chilly Arctic blast set to move in next month.
Met Office deputy chief meteorologist David Oliver said: "An unsettled Christmas weekend is on the way for many, with those in the north and west seeing the most frequent and the heaviest showers.
"High winds will affect some coasts through the weekend with gales in places, especially the north and west."
For January, meteorologists are warning that weakening Atlantic pressure between Iceland and the tropical Azores could spell a cold January in the UK.
There are currently 2 flood warnings in place where "flooding is expected" along the Cumbrian coast from Roosebeck to Carnfort and between Roosebeck, Ulverston, Flookburgh and the A590.
A further 48 flood alerts where flooding is possible are also in place.
