The entire Shannonside region will be under a thunderstorm warning today.
The status yellow alert starts at 9am and continues until 6pm.
It includes Roscommon, Longford and Leitrim and several other counties.
A high temperature warning is also in place for the entire country until tomorrow at 9am.
Cathal Nolan from Ireland's Weather Channel says it will be next week before temperatures to return to more normal levels: