Met Eireann has issued a four-day weather advisory as the Beast from the East 2.0 is set to hit Ireland.
The freezing blast will bring with it "showers of sleet or snow" in the eastern counties from Sunday evening.
The alert is in place from 6am on Sunday until 6pm on Wednesday.
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 and a cold day throughout at 6C.
That will drop to around 3C overnight and will remain mostly cloudy with showery rain.
Looking more at 'The Beast', the dangerous weather conditions will hit the country over the weekend and could last for several days as temperatures plummet below zero also.
The weather phenomenon bringing the wintry weather is a sudden stratospheric warming event which occurred in the Arctic recently.
And this is the same event that sprung 'The Beast From The East' on the country in 2018 which brought Ireland's heaviest snow in three decades.
The SSW causes the jet stream to divert and head in the direction of Ireland as it brings cold easterly winds across Europe.
Here's how the weekend is looking according to Met Eireann:
Saturday: "Saturday, will be mostly cloudy, with just a few bright or sunny intervals. Further scattered showers in Leinster and east Ulster. Mainly dry further west. It will be cold with highest afternoon temperatures of 4 to 7 degrees, and light to moderate north to northeast breezes.
Saturday night: "Isolated showers near coasts, otherwise mostly dry under broken cloud. Some frost and possible ice with lowest temperatures of -1 to +3 degrees, in moderate easterly winds.
Sunday: "Colder again on Sunday with highest temperatures of just 2 to 5 degrees, in a moderate to fresh easterly wind. Most areas will however stay fully dry albeit cloudy, but isolated showers may occur in the east and southwest, turning wintry on high ground in the east.
Sunday night: Very cold with a widespread frost and ice. Scattered wintry showers will move into the east with a dusting of snow possible. Lowest temperatures of -3 to +1 degrees in moderate easterly winds.
Monday: "Scattered wintry showers will continue on Monday and Monday night, mainly affecting the east and along north coasts. Bitterly cold with daytime temperatures of 1 to 3 degrees and night-time lows of -3 to 0 degrees, in moderate to fresh east to northeast winds.
Tuesday: "Temperatures on Tuesday will be similar to Monday, but there will be an added wind-chill factor as easterly winds increase fresh and gusty. Wintry showers in the east and near northern coasts at first, but extending to other areas later.
Tuesday Night: "A bitterly cold night with widespread frost and ice as temperatures fall to between -4 and 0 degrees. Most parts of the country will hold dry, with clear spells across the northern half of the country, where temperatures will be lowest. Some wintry showers will be possible in the east and north."
