Hurricane Harbor Chicago is closed today, Wednesday, June 17, 2026, because of forecasted weather.
The closure affects the water park attached to Six Flags Great America in Gurnee, Illinois. Six Flags Great America still lists regular theme-park hours for Wednesday.
Hurricane Harbor Chicago Weather Closure
Six Flags did not list a separate reopening time for the water park Wednesday. Guests planning a same-day visit should check the official park page before leaving, since weather decisions can change quickly during the summer storm season.
Source: Six Flags Great America park hours.