Information supplied by Met Éireann
Mainly dry with sunny spells today, but isolated showers will continue, mostly in the north.
Afternoon temperatures will be between just 1C and 4C degrees generally - but along the west and south coast temperatures will be higher.
Winds will be mostly light and variable in direction, becoming south-easterly during the late afternoon or early evening.
It will cloud over, bringing rain in the southwest later this afternoon.
Tonight, rain will spread from the southwest.
The rain will be heavy and persistent and will bring local spot flooding to the south and southwest.
As it moves northwards it will turn to snow, bringing large accumulations to Connacht, the midlands and much of Leinster.
Temperatures overnight will be between -1C and -5C degrees, coldest in the east.
Temperatures in west Munster will remain above freezing. Winds will be moderate to fresh southeast to east, becoming strong westerly in Munster by morning.