Motorists are being advised to drive with care this morning following icy conditions in places overnight.
Freezing weather conditions are back with temperatures dropping to as low as -6C in some areas.
Up to five centimetres of snow hit parts of the country with Clare, Cork, Kerry, Limerick and Roscommon the worst affected.
A number of roads have been closed as a result.
Further snow will fall again today, moving east across the country - but the cold snap is not likely to last past the weekend.
Padraig Corkery of Kerry County Council says there was quite a bit of snowfall last night with Killarney the worst hit.