A status yellow snow and ice warning has been issued for this evening.
A band of wintry showers will sweep across the country later, as temperatures plummet once again.
Counties Sligo, Leitrim ,Roscommon are among a number of counties where accumulations of snow is likely after 6pm tonight.
Met Eireann is urging motorists to drive with due caution from this evening,
Early this morning heavy fog was reported in the Castlebar area, with black ice reported in parts of North Mayo.