The new warning will come into effect from 4pm.
Hazardous walking, cycling and driving conditions are expected again this evening - with another low temperature warning due shortly.
Met Eireann's Yellow alert comes into force at 4pm, and the forecaster is warning of wintry showers in the Northwest and Southwest.
Tricky conditions are expected on un-treated roads and paths as well, the warning expires at midday tomorrow.
Offaly's Cathal Nolan of Ireland's Weather Channel says it won't be like the last cold snap: