Met Éireann is warning of hazardous travelling conditions and poor visibility.
Temperatures are expected to drop to as low as minus four degrees in parts of the country, with a number of status yellow warnings issued.
A Status Yellow low temperature and ice warning has been issued for Kildare, Carlow, Dublin,Kilkenny, Laois, Longford, Meath, Offaly, Westmeath, Wexford, Wicklow and Munster from 6pm tomorrow evening until 11am on Sunday morning.
Donegal will be subject to a snow and ice alert from 8pm today until 11am tomorrow - and again from 6pm tomorrow until 11am on Sunday, along with Cavan, Monaghan, Louth and Connacht.
Met Éireann is warning of hazardous travelling conditions and poor visibility.

Disappointment As Parochial House In Celbridge Set For Future Plans Still Not Purchased By KCC
Initial Scoping Exercise Undertaken For Future Management Of Curragh
ESB Identifies Two Kildare Areas As Dangerous For Swimming, As Heat Warning Continues
€640,000 Worth Of Cannabis Seized In Ballymore Eustace
Kfm Obituary Notices
Uisce Éireann Works Cancelled In Prosperous And Rathangan Tomorrow
Trailer And Tools Worth Over €8,000 Stolen From Farm In Athy
Disruption To Water Supply In Four Areas Of Kildare Tomorrow, As Temperature Warning Continues