A Status Yellow rainfall warning has been issued for all of Connacht, Donegal, Kerry and Clare.
Heavy rain is forecast for later today, Monday night and Tuesday which may cause some river and localised flooding.
The warning is valid from 2pm Monday until 2pm Tuesday 24th.
The weather is set to turn much colder this week:
Tuesday will be mostly cloudy with persistent or heavy rain over the western half of the country and a risk of localised flooding. There’ll be some showers further east. The rain in the west will extend eastwards through the afternoon and evening, eventually clearing. Highest temperatures of 10 to 12 degrees with fresh southerly winds, becoming westerly and easing as rain clears. Tuesday night will be cold and mainly dry with clear spells. Lowest temperatures of 0 to 4 degrees.
Wednesday will be mainly dry with sunny spells and perhaps a few light showers near west and north coasts. Highest temperatures of 7 to 9 degrees with light westerly breezes. Wednesday night will be cold and dry with lowest temperatures of -2 to +2 degrees and with frost in many areas.
Thursday will continue dry with sunny spells. Highest temperatures of 5 to 8 degrees with light to moderate southerly breezes.
At the moment, Friday looks like being mostly cloudy over Leinster and Munster with spells of rain. Connacht and Ulster will be mainly dry. Highest temperatures of 5 to 9 degrees with light variable breezes.
Current indications suggest that next weekend will be cold and unsettled with spells of rain at times.