Snow is expected to accumulate on higher ground, especially in the north and the west.
Met Éireann has issued three different status yellow weather warnings for most of the country tomorrow.
Snow and ice alerts will be in place for 14 counties in the north, west and parts of the midlands from 3am.
Meanwhile, a separate warning for rain will hit seven counties in the east, including Kildare, beginning at 5am.
Snow is expected to accumulate on higher ground, especially in the north and the west.