September 2026 in O'Fallon, Illinois brings 17 live events across the city, led by community (5), workshop (5), art (3). Here's what's on.
Community (5)Workshop (5)Art (3)Family (3)Sports (3)
All September 2026 Events
Frequently Asked Questions
What's happening in O'Fallon in September 2026?
There are 17 events in O'Fallon, Illinois in September 2026, including Hong Martial Arts – Register Anytime at Katy Cavins Community Center, Vine Street Market at The Station, Last Day for the O'Fallon Aquatic Center in 2026! at Katy Cavins Community Center, Stained Glass – Lead Came Method at Katy Cavins Community Center. Browse the full September 2026 calendar on VenuNite.
Are there free things to do in O'Fallon in September 2026?
No September 2026 events in O'Fallon are currently marked free. Events with an unknown price are not counted as free.
How do I find events in O'Fallon for a specific date in September 2026?
VenuNite lists every upcoming event in O'Fallon, Illinois with date filters. Use the date picker on this page to narrow September 2026 down to a single day or weekend.
