There's a status-yellow alert for snow and ice in Offaly and Westmeath.
An arctic blast could lead to hazardous road conditions and slippery paths.
Met Eireann has issued a status-yellow alert for snow and ice for Offaly and Westmeath.
The warning also affects Cavan, Donegal, Monaghan, Connacht, Longford, Louth, and Meath.
Alan O'Reilly from Carlow Weather says it will be cold throughout today: