September 2026 in O'Fallon, Missouri brings 108 live events across the city, led by family (66), community (33), art (26). Here's what's on.
Family (66)Community (33)Art (26)Workshop (18)Literary (11)
All September 2026 Events
Frequently Asked Questions
What's happening in O'Fallon in September 2026?
There are 108 events in O'Fallon, Missouri in September 2026, including Time for Twos at Middendorf-Kredell Branch Library, Family Fun: Farm Art at Middendorf-Kredell Branch Library, Tiny Tots at Middendorf-Kredell Branch Library, Growing Minds: Apples at Deer Run Branch. 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, Missouri with date filters. Use the date picker on this page to narrow September 2026 down to a single day or weekend.