Dry, with light winds and clear periods overnight and turning chilly with a frost in some rural spots, but fog and low cloud also likely to form in places.
Minimum temperature 0 °C.
Mist and fog could be slow to clear in the morning, especially across Antrim and southern County Londonderry otherwise dry with bright or sunny spells.
Becoming cloudy and breezy later. Maximum temperature 12 °C.
Outlook for Friday to Sunday:
Mostly cloudy and breezy Friday and Saturday with rain at times, but warm on Saturday, especially in any brighter spells in east.
Rain clearing into Sunday then bright but colder.