Galway Bay fm newsroom - A status yellow weather warning has been issued for heavy rainfall and snow for the west and south west of the country over the weekend.
Widespread heavy showers are also forecast nationwide and at times are likely to lead to rainfall accumulations of 30 to 40mm.
The worst affected areas are expected to be Connaught, Donegal, Clare, Cork, Kerry and Limerick.
The forecast indicates a return to more settled conditions towards the middle of next week.
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The RSA is asking road users to keep up to date with local weather and traffic conditions and be aware of the conditions before setting out on a trip.