A status yellow warning for snow and ice remains in place for Ireland until Saturday, with showers of hail, sleet and snow forecast.
Met Eireann is warning that most part of the country will be hit by snowfall today.
There will be widespread outbreaks of heavy rain spreading in a north-easterly direction. However, Met Éireann said these showers would turn to sleet or snow as the day progresses.
The snow is likely to be heaviest over much of Munster and south Leinster, with the forecaster warning of some "significant accumulations" in places.
Meteorologist Vincent O'Shea said the snow would be predominantly confined to higher ground, but there was a risk that some inland areas would also be affected.
The band of weather will clear southwards later in the evening, with overnight temperatures between -2C and -5C.
Tomorrow is expected is be significantly drier with spells of sunshine.
However, Met Éireann predicts tomorrow night will be "bitterly cold" as temperatures fall to -4C, with a severe frost and icy conditions.
Some sunny weather is expected on Saturday morning. But the frost and ice will return once again later that night.