A weather warning has been issued for every county in the Republic of Ireland after sleet and snow led to travel disruption in some parts.
National forecaster Met Éireann said cold temperatures could mean ice develops on untreated surfaces, leading to hazardous travelling conditions.
A status yellow ice warning will be in effect from 6pm on Friday until 9am on Saturday.
It comes after a status yellow snow and ice warning was issued for the entire province of Munster as well as Carlow, Dublin, Kildare, Kilkenny, Laois, Offaly, Wexford, and Wicklow.
The warning covers the areas from midday to 6pm on Friday.
A separate yellow rain warning with the risk of localised flooding is in place for Dublin, Louth, Meath and Wicklow and will expire at 3am on Saturday.
On Friday morning, the agency said temporary accumulations of snow and falling sleet had the potential to cause poor visibility and hazardous travelling conditions.
A status yellow warning for snow and ice, which has now expired, was in place for Cavan, Monaghan, Kildare, Longford, Westmeath, Leitrim, Roscommon, Sligo and Donegal.
The forecaster said there will be persistent rain, with a mix of sleet and snow at times.
Iarnród Éireann said some DART trains for commuters around Dublin had been delayed on Friday, with the suspension of services between Lansdowne and Dun Laoghaire.
Some Bus Éireann Services to and from Dublin and Donegal and Cavan were also cancelled because of bad weather, as well as services between Cavan and Dundalk.
Dublin Bus said its 44B route from Glencullen was curtailed due to the weather.
In Northern Ireland, police said they received several reports of vehicles becoming stuck in heavy overnight snow in and around Enniskillen, Co Fermanagh.
They urged motorists to consider whether their journey is necessary, and to travel with “extra caution”.
The UK Met Office had initiated a snow warning for Armagh, Fermanagh, Tyrone and Derry overnight, expiring at 10am on Friday.
