Galway is under a Status Yellow low temperature and ice warning until 9 tomorrow morning
The Met Eireann warning also covers Roscommon, Cavan, Monaghan, Munster and Leinster
Temperatures will fall to between -1 and -3 degrees generally with a sharp frost and icy stretches along with some black ice leading to treacherous travel conditions at times
Met Eireann Meteorologist Holly O'Neill says most of the country has been hit by an Arctic blast