Met Éireann has issued a status yellow rainfall warning for Donegal.
It warned that there will be heavy rain at times in the county during the period, leading to the potential for surface and river flooding.
The warning comes into force at 3pm on Friday for 24 hours to 3pm on Saturday.
Met Éireann has also issued a status yellow wind warning for Cork and Kerry.
The warning comes into force at 6pm on Friday and will remain in place until 2am on Saturday.
“Westerly winds will reach mean speeds of 50km/h to 65km/h and gusts of up to 100km/h in Kerry and west Cork,” Met Éireann said.
Nationwide, Saturday is forecast to be a windy day with a mix of sunny spells and blustery showers.
Some of these showers will be heavy with hail and isolated thunderstorms.
“The showers will be heaviest and most frequent in the west and northwest. Highest temperatures of 5°C to 8°C in fresh to strong and gusty west to northwest winds,” it said.