There will be unsettled and showery weather for the week ahead, according to Met Eireann.
Tonight (Tuesday) rain will become widespread and there will be lowest temperatures of 5 to 8 degrees Celsius, Met Eireann says.
Winds will stay light in the northeast but there will be a freshening west to northwest wind elsewhere, it says.
Tomorrow (Wednesday) will be a cool windy day with occasional rain or showers and there will be top temperatures of 10 to 13 degrees, it says.
It will be coolest in the north on Wednesday with blustery northwest winds, it says. Wednesday night will bring clear spells with showers becoming confined to coastal areas of the west and north, it says.
Met Eireann says on Wednesday night there will be clear spells with showers becoming confined to coastal areas of the west and north and it will turn cold with temperatures falling to between 2 and 4 degrees.
Met Eireann has a status yellow rainfall warning in place for Donegal until Wednesday morning where rainfall totals of 25 to 32mm expected, with some spot flooding likely.
There will be a touch of frost in sheltered rural areas, and some mist and fog patches also, it says.
Winds on Thursday will be mostly light and it will be rather cool with highest temperatures of 9 to 13 degrees, coolest in Northern parts of the country, Met Eireann says.
On Thursday night, heavy rain looks set to spread northwards over the country and will continue into Friday morning, it says. There will be fresh easterly winds on Friday, it says.
In northern parts it will remain cool and wet into Friday evening while southern parts should brighten up and turn milder Friday afternoon, it says.
Looking ahead to the weekend, Met Eireann says that it looks to be unsettled with showers or longer spells or rain however, there will be some dry periods also.
It says it will be blustery at times with temperatures in the low to mid teens.
Met Eireann says that at the moment soil temperatures are ranging from 8 degrees in the north east to around 10 in the southwest.