Two separate weather warnings for snow and low temperatures have been issued for the entire country.
From 8 o'clock tonight, a low temperature and ice warning will come into effect for all 26 counties, with temperatures set to dip to lows of minus three in Cavan and Monaghan.
A status yellow snow and ice alert will also kick in at 11 pm and Met Eireann says this could lead to treacherous conditions.
Met Eireann also cautions that freezing fog patches may occur overnight across the Northern Sound region.
Both of the warnings will remain in place until tomorrow morning.