Whether you're heading to the parade or the pub, you'll need your winter woolies this Paddy's weekend.
Met Eireann has issued a weather warning for Leinster, Cavan, Monaghan - with low-temperatures, snow showers, and snow accumulation forecast on Saturday night and Sunday.
The yellow alert is in place until midnight on Sunday, with Dublin, Carlow, Kildare, Kilkenny, Laois, Longford, Louth, Meath, Offaly, Weatmeath, Wexford, Wicklow, Cavan and Monaghan set to get the worst of the cold weather.
The forecaster is warning of night time temperatures as low as -4 in parts of the country over the weekend.
Here's a day by day breakdown:
Saturday
If you're heading to the parade tomorrow in the city, there will be scattered showers at first that will turn to a small amount of sleet and snow. There could be some sunny spells with temperatures in the afternoon ranging from only 1 or 2 degrees. Strong and gusty easterly winds will add a "significant chill".
The rest of the country will see a cold and wintry day with scattered showers turning wintry. Highs of only 1 to 3 degrees in the eastern half of the country, and 4 to 6 degrees in the west.
Saturday Night
Scattered wintry showers in the north and east. Very cold with lows of -1 and -4 and widespread sharp frost.
Sunday
Very cold again with scattered wintry showers drying out in the afternoon. Fresh and strong wind chill in the afternoon with temperatures of just 1 to 4 degrees.
Sunday night with be dry with the odd wintry shower in parts. Lows of around -1 to -4 degrees with widespread frost.
Monday
Mostly dry with the odd wintry flurry. Monday night will be mainly dry but it will be very cold with a severe frost as winds fall light.
Tuesday
Another mainly dry day with hazy sun. Top temperatures of 5-7 degrees.
Wednesday
Cloudy with some patchy rain or drizzle.
Hundreds of thousands of people from Dublin, across Ireland and around the world will fill the streets of Dublin City Centre this weekend for the biggest national holiday of the year.
To make room for the parade and crowds, there will be a number of changes to public transport services for the day. Read more here.
We also have a handy list of the best events on in Dublin across the weekend. You can check that out here.
