Drivers are being urged to take caution on local roads this morning.
In particular, Thomastown Gardaí are warning of very heavy fog on the M9 motorway, especially along exits 4 through 9.
Motorists are advised too to be aware of the conditions in the Ballyhale/ Knocktopher area.
While GardaI across Kilkenny and Carlow have similar messages.
Meanwhile, Met Eireann is also warning of some icy stretches on roads across the country.