Met Éireann is warning of severe frost and icy stretches on the roads this morning with a Status Yellow low temperature and ice warning in place.
The weather alert covers the entire country and is in place until 11am this morning.
The forecaster is warning that there may be difficult travelling conditions on the roads while the low temperature may cause issues for vulnerable people. It is also warning of the risks to animal welfare from the freezing temperatures.
Meanwhile, snow showers could lead to some accumulations in northern counties with a Status Yellow snow-ice warning in place for Donegal, Leitrim, Mayo, Sligo.
This weather alert is in place until 11am tomorrow.
In Northern Ireland, there is also a Status Yellow snow and ice warning in place for Antrim, Armagh, Down, Fermanagh, Tyrone and Derry.
The UK Met Office has warned that frequent heavy snow showers will continue to push inland, likely disrupting travel across the region. This alert is in place until midnight tonight.