Met Éireann has issued a Status Yellow Low-Temperature warning for Donegal.
Temperatures will fall to between -2 and -5 tonight, with widespread frost developing throughout the night.
The weather warning is valid from 6pm this evening until 12 noon tomorrow.
Munster, Connacht, Cavan, and Monaghan will also be struck by low temperatures tonight as the cold snap takes hold.
It will be slightly milder along with east coast due to the onshore northeasterly breeze.
Patches of mist and fog are also forecast to develop towards Sunday morning.
Tomorrow morning will be frosty, with the cold persisting throughout the day with temperatures of just 1 to 4 degrees with light to moderate east to southeasterly breezes. More frost is expected to set in quickly tomorrow evening.
Donegal County Council began gritting roads at 4pm this evening, and ask that motorists assume that no road is ice-free.
To see which routes are being gritted this evening, you can visit Donegal County Council’s interactive map by clicking here.
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