Met Éireann has extended a Status Yellow warning for rainfall to all counties this morning.
Thundery downpours could lead to accumulations of between 25 and 40mm, with the risk of localised flooding.
The alert remains in place until 3 o'clock Saturday morning.
Gerry Murphy from Met Eireann says 'There is a band of rain affecting many areas at the moment with more heavy rain this evening. There is a risk of significant rainfall in short spaces of time which could result in spot flooding'.
Drivers are being reminded to be careful in heavy showers and spot flooding, roads will also be more slippy today after the long dry period.
The AA's Lauren Beejan says 'Be prepared for particularly slippery conditions on any roads that haven't seen rain in a while'.
However, the good weather is set to return tomorrow with sunny spells and just a few scattered showers, Sunday will be drizzly but early next week temperatures will be as high as 26 degrees with sunny spells