Snow showers are expected to replace Friday’s heavy rain as a band of low pressure moves across Northern Ireland on Saturday.
The ‘yellow’ snow warning in place until lunchtime means there is a risk of travel disruption in some of the worst affected areas.
Many roads were impassable on Friday as torrential rain caused flooding around Co Down, including Newcastle’s South Promenade and the Shore Road in Rostrevor.
The Portaferry Road in Newtownards was also closed for a time due to the adverse weather conditions.
Scattered showers are expected to continue throughout Saturday afternoon and evening with the wind strengthening as the day goes on.
By Saturday night there could be gale force winds across Armagh and Down with the worst of the weather in coastal areas.
A spokesman for Meteogroup, the weather forecasting division of the Press Association, said the forecast showed an improving picture over the course of the weekend.
“Saturday is going to be a windy day with squally showers which will be wintery at first, and the strongest winds will be at the coast.
“Sunday will be a little bit brighter before clouding over in the evening.
“Other than a few spots of drizzle in the evening, Sunday will have some sunny spells and be dry,” the forecaster said.
Temperatures on Sunday will be around the seasonal average of 7-8C.
In coastal areas of England and Wales, the combination of rain, high tides and strong winds means a flood warning remains in place.
There are six severe flood warnings – meaning a danger to life – in force along the coastlines of Cornwall, North Devon and Somerset as well as Plymouth Barbican, the Environment Agency said.
There are also nearly 100 flood warnings and more than 200 flood alerts in place across England and Wales.
High tides will leave coastal areas in the South West at risk of flooding and parts of south-east England, the North West and Yorkshire and Hull coast will also be affected by the wind, rain and high tides in the next few days.
The Army is currently on standby to help villages cut off by the floods, and military planners met council officials and emergency services to discuss how to bring relief to communities, many of whom have been stranded since Christmas. In Wales, students in seafront halls of residence at Aberystwyth University are being evacuated today until 4pm on Monday as a precaution.
The latest poor weather conditions come at the end of a month which has already become the wettest January on record for parts of southern England.