It has been a wet start to Wednesday with forecasters warning heavy showers will create "poor driving conditions" in parts of the country.
AA Roadwatch Ireland are advising motorists to reduce their speed while driving in wet conditions.
Munster and Leinster will see widespread rain this morning however, it will be mainly dry in the northwest.
Met Eireann said: "The rain will be heaviest in eastern and southern coastal counties, with some poor driving conditions.
"Cold and breezy, top temperatures just 9C to 12C, and feeling cooler in the moderate to fresh and gusty northeasterly wind."
Tonight will see some more showers but also some dry spells and lows of 4C to 6C.
And Thursday will see further heavy showers with a risk of hail and thunder in places, however, there will be bright sunny spells also.
Temperatures will hover around 9C or 10C over Ulster, but 11C to 13C, elsewhere. Winds mainly moderate easterly, but locally variable in direction.
A forecaster said: "Showers soon dying out to give a dry, clear night with light variable breezes.
"Mist will form and thicken into fog in places. Lowest temperatures of 0C to 3C, with some grass frost also."
Meanwhile, Friday will see more sunny spells and showers, with the showers heaviest and most frequent over the northern half of the country.
Highest temperatures will reach just 9C to 12C, in light to moderate variable breezes. Some showers over parts of Ulster overnight but dry elsewhere, with long clear spells.
Some patches of mist, fog and grass frost forming. Cold, with lows of 1C to 3C, in light variable breezes.
