Snow will continue to fall across large parts of the UK overnight, including parts of Scotland and a central swathe of England and Wales.
The Met Office has warned that rural communities could be cut off as roads become hazardous, with up to 20cm (8in) of snow expected in some places on Sunday.
Temperatures are due to sink to minus double-digits in areas of Scotland overnight.
Sun shone over much of the country on Saturday, with temperatures only floating a few degrees above freezing in most parts.
Rain and snow lurks off the west coast, however, and will start sweeping in during the early hours of Sunday morning, forecasters said.
A Met Office spokesperson said: “Road, rail and air travel delays are likely, as well as stranding of vehicles and public transport cancellations.
“There is a good chance that some rural communities could become cut off.”
Some 18,000 homes were reconnected after losing power as a result of stormy weather on Friday, Scottish and Southern Electricity Networks said.