A status yellow alert will remain in operation until 10am this morning.
The AA report Ice and frost is an issue on many routes, particularly secondary roads and sheltered areas.
Remember it can take up to ten times longer to stop your vehicle on icy roads, so leave extra space between your vehicle and the one in front. Gentle manoeuvres are key to safe driving.
The Sally Gap (R759) and approach roads in the area are impassable due to snow and ice. Gardaí are advising motorists to avoid the area.
Dry in most areas this morning, with frost and ice in parts of the midlands, east and north, clearing gradually. Rain will move in across Atlantic coastal counties and will extend gradually eastwards during the morning and afternoon, turning to sleet in some areas, mainly in the north and northeast, with hill snow. Clearer conditions will follow later his afternoon and this evening, with showers in Atlantic coastal counties. Becoming breezy, with freshening southerly winds, later veering west to northwest with the clearance. Maximum temperatures will range from 3 or 4 degrees in the north and northeast to between 8 and 10 degrees along southern and Atlantic coasts.