Afternoon temperatures will range from six to nine degrees
Monday's weather will feature sunny spells, but also scattered rain and some showers of hail.
It will be cold during the day, with frost in parts of Ulster, Connacht and north Leinster clearing as the morning progresses. Sunny spells will develop, but it's set to stay rather cloudy in southern areas.
There will also be scattered rain and hail showers, mostly in parts of Ulster and Connacht on higher ground, but some showers are also likely to appear in parts of Munster for a time this morning also.
Afternoon temperatures will reach six to nine degrees, with moderate westerly winds veering northwest.
As the night sets in, it will get very cold, but will remain mostly dry as showers become confined to northern coasts.
Frost will set in quickly and become severe overnight, with icy stretches as temperatures fall as low as -4 degrees and some fog developing in places later.
This information with thanks to Met Éireann