Met Eireann is forecasting frosty conditions tonight, with lows of -3C expected in parts of the north west.
Dry and clear conditions will lead to ice patches forming in areas.
Donegal County Council is preparing to grit all main routes from 9pm.
The outlook for the weekend is for dry, cool and sunny weather, with temperatures dropping below zero each night.
ALL routes will be gritted from 9PM on Fri. 04/03. Donegal gritting route index as follows:
- 06: Inishowen West
- 04: Inishowen South
- 01: National Primary North
- 02: National Primary Central
- 03: National Primary South
- 07: Milford South
- 08: Milford North
- 09: Cill Ulta East
- 10: Cill Ulta West
- 11: Na Rosa
- 12: Binswilly
- 13: Stranorlar North
- 14: Stranorlar East
- 15: Stranorlar West
- 16: Donegal West
- 17: Donegal North
- 18: Donegal South
- 19: Donegal National Secondary
- 05: Inishowen East
- BT: Buncrana Town
- LT: Letterkenny Town
Check Donegal County Council’s interactive map for gritting routes
Assume that no road is ice free.