A weather warning is in place across the north and north-east with snow to sweep in throughout the day.
Wintry showers have been forecast with up to three cm of snow likely to fall in some areas.
Outbreaks of sleet will gradually start moving further north throughout the day.
An updated yellow weather warning for snow was issued this morning to show most snow will fall on higher ground.
The latest warning covers parts of Aberdeen, Aberdeenshire, Moray, the Highlands and Orkney.
It came into effect at 9am and is expected to stay in place until 3pm tomorrow.
Snow could cause disruption across Scotland
The Met Office has warned ice is more likely to cause a risk when the snow and sleet turns to rain over the weekend.
The wintry weather could lead to travel disruption with dangerous driving conditions expected to cause delays.
The snow gates at Cairn O Mount on the B974 have been closed.
There may also be last-minute changes to public transport services, including cancelled trains, planes and buses.
ScotRail has said it is planning to run its full timetable, if weather allows, with the exception of the West Highland Line.
Throughout the day, train services between Glasgow Queen Street and Mallaig will be delayed.
Customers are advised to check their journey in advance.
No schools have been closed as a result of the weather, but Stagecoach and Craigies Taxis are not running school transport across Orkney.
Residents have also been warned there is a “small chance” of power cuts.
One to three cm of snow
The warning states: “Outbreaks of sleet and snow will gradually spread northwards across the warning area during Friday afternoon and through Saturday.
“Accumulations will vary from place to place, but some areas are expected to see one to three cm of snow, whilst five to 10 cm is expected above 200 metres and perhaps as much as 15-20 cm above around 300 metres.
“Ice will be an additional hazard. During Saturday, milder conditions will follow from the south with sleet and snow turning to rain.”
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