Motorists are being warned to take extra care on the roads as some of the coldest temperatures so far this winter are forecast for tonight, with the likelihood of some snow over the coming days.
This morning gardai across the region are advising road users to slow down as roads are icy. The main roads have been gritted, but minor roads remain dangerous. There are no reports of any accidents but drivers are advised to give themselves additional time for journeys.
Saturday was the coldest night so far this winter in Ireland, with a low of -5.9 degrees recorded in Co Roscommon.
But this is expected to be beaten tonight when temperatures are set to fall to as low as -6 degrees in the midlands and northwest.
Met Éireann says that while today there will be some bright and sunny spells, there is an ongoing danger from lingering frost and ice in some areas this morning, creating hazardous conditions.
Some snow is forecast for Wednesday night and Thursday morning as rain moves in from the northwest. Snow will fall in places by Thursday morning, but is likely to turn to sleet or rain on the east coast.
Met Éireann forecaster Gavin Gallagher said the most likely instances of snow would be in the midlands and the northwest on Wednesday night and Thursday morning.