A Status Yellow Low Temperature/Ice warning has been issued for all of Connacht, Cavan, Monaghan, Donegal, Longford and Clare.
The alert will come in to effect at 6 o'clock tonight and is set to last until 10am tomorrow.
Met Éireann is forecasting temperatures will drop to between -2 and -5 degrees overnight. There will be widespread severe frost and icy patches on untreated surfaces.
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