The Met Office weather warning has been downgraded to yellow after Friday's amber warning.
The second highest risk level was in place as heavy snow caused major traffic and travel chaos.
Further snow was expected on Saturday morning across the region, with a risk of icy conditions developing later.
The public are advised of a risk of disruption to travel.
The Roads Service said motorists need to exercise caution, particularly when driving on untreated roads.
"Conditions will remain cold for the rest of the weekend, with icy stretch forming where snow cover partly melts," a Met Office spokesperson said.
Wintry showers of sleet or snow will continue to affect eastern coastal areas.
On Sunday wintry showers will develop towards the coast again, with heavier showers likely across the Mourne mountains.
Around 2,400 homes were hit by blackouts overnight, as engineers worked to restore supplies.
Power has been restored to 750 homes after 900 were still cut off on Saturday morning.
Around 150 homes remain without power in the Downpatrick area. A NIE spokesperson said they are expected to be reconnected by Saturday night.
The remaining homes waiting for power to be restored are in the Newry and Downpatrick areas. A helicopter was used by NIE to assess the problem.
"The damage is concentrated in the Eastern areas," an NIE spokeswoman said.
"NIE emergency crews are responding to damage and restoring supplies to those affected by the severe weather."
Meanwhile, Belfast International Airport says it is open and operational, with only a few minor delays.
"We don't anticipate any significant delays," a spokesperson said.
George Best Belfast City Airport says it is running well apart from one flight to Heathrow cancelled and some minor delays.
An amber weather warning remains in place in England, after the highest risk warning was in place in Wales on Friday.
Customers without electricity supply are advised to contact NIE's Customer Helpline on 08457 643 643.