President Obama will be the keynote speaker. First lady Michelle Obama and second lady Jill Biden will host a welcome reception for the event.
News of Clinton's appearance was first reported by CNN.
September could be an eventful month of public appearances for Clinton, who is weighing a run for president. She's already scheduled to appear at Iowa Sen. Tom Harkin's annual steak fry in Indianola on Sept. 14, her first trip to Iowa since losing to Obama there in 2008.