Thursday night is set to be frosty with temperatures hitting below zero
Met Eireann has forecast a wet week ahead with conditions turning colder from midweek.
Sunday will see largely dry conditions apart from some patchy rain or drizzle mainly in Connacht or Ulster.
Highest temperatures are to range between 8 to 12 degrees with tonight experiencing some light rain or drizzle.
Of Sunday night Met Eireann says: "More persistent rain will move southeastwards across Ulster overnight, accumulations will be low.
"There will be mist and fog in Munster where winds will be lightest. Lowest temperatures of 4 to 8 degrees in light to moderate west to southwest winds."
On Monday the country will be hit by outbreaks of rain and drizzle with the northwest set for the worst of it.
However, most of Munster will be dry with highest temperatures between 9 and 11 degrees with light to moderate westerly winds.
By Monday night it will become cloudy with outbreaks of light rain or drizzle, mainly in the north and east.
Another wet start to Tuesday with additional rain and drizzle in places as forecast by Met Eireann.
However, the day is set to become drier as it progresses with a few breaks in the cloud developing.
Highest temperatures of 9 to 12 degrees with light westerly winds.
More outbreaks or rain and drizzle are to return on Tuesday night, turning more persistent again in the northwest.
Temperatures on Tuesday night turn a little cooler, ranging between 4 and 7 degrees.
You guessed it, Wednesday will begin with more scattered outbreaks of rainmoving southeastwards through the morning.
Showers will develop in the northwest by the afternoon, turning more frequent and heavier as the day goes on.
Highest afternoon temperatures of 6 to 9 degrees with light to moderate westerly winds, turning much colder by the nighttime with lowest temperatures of 1 to 4 degrees.
There will also be a risk of hail on Wednesday night as Met Eireann forecasts widespread showers, heaviest in the western areas.
Of Thursday, Met Eireann says: "There is some uncertainty in the forecast for Thursday, but current indications are for a cold day with widespread showers of rain or hail, clearing from most areas later in the day.
"However, there is the chance of a more prolonged spell of rain developing in the southwest later. Highest temperatures of just 5 to 7 degrees with moderate southwest to west winds.
"Thursday night is looking very cold and frosty under largely clear skies, with just a few showers in coastal areas of the west and north. Temperatures are expected to fall below zero degrees in most parts of the country."