A Status Yellow low temperature/ice warning is also in place for the whole country.
A new Status Orange freezing fog warning has been issued for 21 counties, including Laois Offaly and Westmeath.
Met Eireann is forecasting dense freezing fog this afternoon, and into the evening, leading to very hazardous driving conditions.
A Status Yellow low temperature/ice warning remains in place for the whole country.
Offaly man Cathal Nolan, from Ireland's Weather Channel, says the cold spell should break coming into the weekend, but for now, it's staying bitterly cold:
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