Hurricane Idalia lasted roughly from August 26 to August 31, 2023. It formed as a tropical depression on August 26, quickly intensified into a hurricane by August 29, reached Category 4 strength briefly early on August 30, made landfall near Keaton Beach, Florida as a Category 3 hurricane on August 30, and then weakened as it moved inland through Georgia and the Carolinas. Idalia became a tropical storm by late August 30 as it crossed into South Carolina and transitioned into a post-tropical cyclone once it moved back over the Atlantic Ocean on August 31, effectively ending the hurricane phase by that date.

Thus, the main hurricane impacts lasted about 5 to 6 days, from formation to dissipation as a tropical or post-tropical system.