900 homes without power after snow
Power has been restored to thousands of homes in Northern Ireland after heavy snow and high winds damaged lines.
Northern Ireland Electricity (NIE) said about 150 customers in the Downpatrick area are still affected despite engineers working throughout the night and day to reconnect supplies.
Elsewhere, motorists across Ireland were warned to take heed of weather warnings after mountain rescue teams in Co Wicklow attended five calls to people stranded in heavy snow.
All of the cars were stuck on high mountain roads in or around the Sally Gap area.
The final rescue finished at 3am when team members delivered a stranded motorist to the Blessington garda station.
"All roads leading to the Sally Gap as well as some other high mountain passes in the Wicklow area are still impassable," said a spokesman for the Glen of Imaal Red Cross Mountain Rescue Team and the Dublin and Wicklow Mountain Rescue.
"Mountain rescue would like to thank all those involved in the five successful rescues. However, we are asking drivers to heed the weather warnings and not to attempt to drive these roads."
Met Eireann said a widespread sharp or severe frost is expected overnight, with temperatures as low as minus 4C (24.8F), resulting in icy stretches on roads and patches of freezing fog.
It will also be very cold on Sunday.