Motorists have been advised to exercise "extreme caution" due to snowfalls across parts of south Leinster.
Met Éireann has issued a status yellow warning for Carlow, Kildare, Kilkenny, Laois, Wicklow, Offaly and Tipperary, with heavy rain forecast.
The forecaster has said the rain will turn to sleet and snow in places.
The warning is in place until 2am tomorrow.
Sleet and snow have been affecting conditions in parts of counties Laois, Carlow, and Offaly.
Areas around Stradbally, Co Laois, Carlow town and Tullamore, Co Offaly were particularly affected.
AA Roadwatch said snow affected part of the M7 between J15 Ballybrittas in Co Laois and J14 Monastrevin in Kildare and advised "extreme caution".
Snow also affected conditions on the N80 between Tullamore and Stradbally.
Motorists are advised to drive with caution on the Laois/Offaly border in the Slieve Bloom area and there are reports of a lot of surface water on the roads in Kildare and Wicklow.
Motorists are advised to slow down and allow space between the vehicle in front.
Snow snow snow pic.twitter.com/2ENsKfTyyb— Ciara Ní Bhroin (@Ciarastweets) November 13, 2019
Met Éireann said temperatures may drop to below freezing overnight, which may cause accumulations of snow and sleet to freeze in places.
The snow should clear overnight and early tomorrow.