A status yellow thunderstorm and rain warning has been issued for counties including Roscommon and Mayo for this afternoon and evening by Met Eireann.
Counties most at risk are Wicklow, Kildare, Laois, Offaly, Tipperary, Clare, Galway, Mayo and Roscommon.
However forecaster Matthew Martin says we can still expect the mercury to hit the 20s tomorrow and Sunday.
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