Met Eireann has issued a weather warning as temperatures are expected to reach as low as -6°C in the North West this weekend.
A status yellow warning was issued for the entire country because of freezing fog on Friday.
Met Eireann has also issued a status yellow warning for low temperatures in Co. Donegal.
The low temperature warning is valid from 7p.m. on Friday until 10am on Saturday.
Meanwhile, the Met Office predicts temperatures could reach as low as -2°C in Derry.