Freezing temperatures will return this week as the mercury is set to drop to as low as -3C.
While temperatures rose slightly over the past week, Met Eireann has predicted that the bitterly cold conditions are to return on Thursday night.
The weather chiefs have warned of "frosty conditions" which will mainly affect the north and east.
A spokesman said: "Thursday is looking largely dry and bright with some sunshine breaking through.
"Highest temperatures of 7 to 10 degrees. Winds will be light or moderate northerly.
"Turning cold on Thursday night, especially in the north and east where temperatures will drop back to between -3 and 0 degrees under clear skies, leading to frosty conditions.
"It will be less cold in the south with temperatures generally above freezing."
Meanwhile, Wednesday will see dry and bright spells with highs of 10C.
However, rain is expected to fall across most of the country, with some heavy showers possible.
The spokesman said: "Tomorrow Wednesday will be a brighter day with dry spells.
"A few sunny spells will develop, but showers will occur widely with isolated heavy ones.
"Highest temperatures of 8 to 10 degrees. Moderate northerly winds."
He added: "Wednesday night will be cloudy and mainly dry for much of the country. Lowest temperatures of 3 to 7 degrees in light breezes."
