Temperatures across county Armagh are set to plummet below zero with a big freeze expected over the next 24 hours.
The Met Office says temperatures could dip as low as minus two degrees and as a result, have issued a severe weather warning.
Temperatures will fall throughout the day across Northern Ireland until Saturday.
The warning comes just days after the Met Office issued a similar warning for ice on the roads.
Wherever you are over the next few days, please be careful on the roads and wrap up warm.