A cold snap is on the way, Met Eireann warns, after issuing a four day weather advisory for the entire country.
Snow and sub-zero temperatures have been forecast from Sunday to Wednesday.
Eastern counties are bracing for the first of the snow from Sunday evening.
This week will see very cold daytime temperatures and sharp or severe frosts at night.
A Met Eireann forecaster said: “Sunday, Monday, Tuesday and Wednesday will be very cold with temperatures in low single figures by day and with sharp or severe frosts and icy patches at night.
“Showers of sleet or snow at times in eastern counties from Sunday evening onwards.
“Hazardous conditions on roads and paths.”
Looking at today, there will be a mix of sunny spells and scattered showers, before temperatures fall to lows of -1C at night with frost.