Information supplied by Met Éireann
There'll be sunny spells and scattered showers of rain, hail, sleet and snow today. The showers will be heavy at times with a risk of thunder.
Temperatures just 1 to 4 degrees generally, with slightly higher values to be found at the coasts.
Winds will be fresh and gusty from a westerly direction, giving a wind chill affect, making it feel extra cold.
The heavy, thundery showers will continue tonight although they will be become less frequent.
Lowest temperatures will range between minus 1 and minus 3 degrees and winds will moderate and back southwesterly.
On Sunday, wintry showers will give accumulations of up to 3 cm of snow, with larger amounts on higher ground, especially in Ulster and Connacht.
Warning valid until midnight.