A Status Yellow snow and ice warning will remain in place for Connacht, Cavan, Monaghan, Donegal, Longford and Louth until 1pm today.
Falls of hail, sleet and some snow are possible throughout the morning with some accumulations in places.
Motorists should take care with icy patches on roads.
TODAY
Frost and ice will gradually clear this morning.
It will be a cold and blustery day with sunny spells and widespread squally showers, some of hail and thunder.
Falls of sleet and snow are possible, mainly on high ground.
Highest temperatures of just 5C to 8C. It could feel colder in strengthening north-westerly winds.
TONIGHT
Showers will continue to feed down across the country overnight in brisk north-westerly winds.
Further wintry falls are possible with the risk of hail and thunder.
However, the showers will tend to become confined to western and northern coastal counties later in the night.
Cold overnight with frost and ice forming in sheltered spots.
Lowest temperatures of -1C to 3C.