A Snow-ice Warning is currently in place for many parts of the country, including Galway.
It will be mainly dry tonight tonight with clear spells. Winds will be light with patches of mist and fog forming.
It will however be very cold with lowest temperatures of +1 to -3 degrees, with widespread frost and a risk of ice on untreated surfaces.
Tomorrow, Monday will be dry and bright at first.
It will become cloudier through the afternoon with outbreaks of rain in western parts towards evening, turning wintry in the east as it pushes inland overnight. It will remain cold, with highest temperatures of 4 to 6 degrees, in light variable or south-east breezes, which will moderate southerly.
Tuesday will be mostly bright and dry, with just a chance of some showers in parts in the early afternoon. Sunny spells are expected, with temperatures of no more than 5 degrees Celsius.
Wednesday will be cloudy, with showers in the early evening into the night. Temperatures remaining around 5 degrees.
Thursday will bring more of the same with cold temperatures and showers forecast, while Friday will be brighter, with sunny spells forecast throughout the county. It will remain cold, with highest temperatures of 4 degrees.