Information supplied by Met Éireann
Frost and freezing fog over Munster and Leinster will clear gradually, with some hazy sunshine developing. However, it will remain cloudy elsewhere, with just a few bright spells and some scattered showers also.
Top temperatures of 4 to 8 C., best in Atlantic coastal fringes.
Overnight, it will be cold and misty with a mix of clear spells and cloudy periods. Frost will be sharp or severe over Munster and much of Leinster, with some pockets of freezing fog also. But frost elsewhere will be slight and more localised.
Temperatures of zero to -4 C., over Munster and south Leinster, but plus 1 to 3 C., elsewhere.