A Status Yellow snow and ice warning will remain in place around the country until 10am this morning.
Met Éireann said there will be scattered wintry showers of hail, sleet and snow with some accumulations, especially on higher ground.
The forecaster said there will also be icy stretches on roads and footpaths.
TODAY
This morning will start cold with frost and icy stretches in many areas and some mist patches.
Showers, some heavy and wintry on hills, will affect western parts of Ulster, Connacht and Munster today but elsewhere there will be a good deal of dry weather with some winter sunshine.
Top temperatures just 3C to 6C.
Southwest winds will be fresh and blustery in the north but lighter further south.
TONIGHT
Tonight there will be further showers in the west and north – some wintry.
Mainly dry elsewhere. Cold with a widespread frost, icy patches and some freezing fog patches.
Lowest temperatures as low as 0 to -3C as winds fall light.
Information supplied by Met Éireann