The Met Office has issued a yellow 'be aware' warning of ice for most of Wales.
It follows this week's snow which brought widespread problems. Forecasters say there could be difficult driving conditions on untreated roads. Pavements could also be slippy.
Meanwhile the Bwlch Mountain Road is still closed because of snow between Treorchy and Nant-y-moel.
Some schools are still closed because of the weather many in Powys.