What's happening in O'Fallon in September 2026?

There are 98 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?

Yes — 24 of the listed September 2026 events in O'Fallon are free, including concerts, open mics, and community events. Filter by price on the list above.

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.

Events in O'Fallon — September 2026 (98 Things to Do)

September 2026 in O'Fallon, Missouri brings 98 live events across the city — from family to community to art. 24 of the listed events are free. Here's what's on.

Events in O'Fallon — September 2026

All September 2026 Events

Frequently Asked Questions

Events in O'Fallon — September 2026

All September 2026 Events

Time for Twos

Family Fun: Farm Art

Tiny Tots

Growing Minds: Apples

Baby Playdate

Senior Social Hour

Book Discussion: "The Berry Pickers" by Amanda Peters

Let's Create: Fantasy Crafts

Let's Explore: Cryptids

DIY Crafts: Diamond Painting

Homeschool Explorers: Symbiosis

Heart Health Screenings

Family Fun: Art Buffet

Growing Artists: Farm Art

Paint Party: Autumn Trees

Game On: Chess Club

Let's Create: Autumn Sharpie Stained Glass

Swap Your Stuff: Record Exchange and Listening Party

Tweens & Teens Create: Recycled Magazine Art

Time for Twos

Music and Movement

Tweens Graphic Novel Club: "Roller Girl" by Victoria Jamieson

Tiny Tots

Baby Playdate

Time for Twos

Time for Twos

Family Fun: Farm Art

Family Fun: Farm Art

Tiny Tots

Tiny Tots

Growing Minds: Apples

Growing Minds: Apples

Baby Playdate

Baby Playdate

Senior Social Hour

Senior Social Hour

Book Discussion: "The Berry Pickers" by Amanda Peters

Book Discussion: "The Berry Pickers" by Amanda Peters

Let's Create: Fantasy Crafts

Let's Create: Fantasy Crafts

Let's Explore: Cryptids

Let's Explore: Cryptids

DIY Crafts: Diamond Painting

DIY Crafts: Diamond Painting

Homeschool Explorers: Symbiosis

Homeschool Explorers: Symbiosis

Heart Health Screenings

Heart Health Screenings

Family Fun: Art Buffet

Family Fun: Art Buffet

Growing Artists: Farm Art

Growing Artists: Farm Art

Paint Party: Autumn Trees

Paint Party: Autumn Trees

Game On: Chess Club

Game On: Chess Club

Let's Create: Autumn Sharpie Stained Glass

Let's Create: Autumn Sharpie Stained Glass

Swap Your Stuff: Record Exchange and Listening Party

Swap Your Stuff: Record Exchange and Listening Party

Tweens & Teens Create: Recycled Magazine Art

Tweens & Teens Create: Recycled Magazine Art

Time for Twos

Time for Twos

Music and Movement

Music and Movement

Tweens Graphic Novel Club: "Roller Girl" by Victoria Jamieson

Tweens Graphic Novel Club: "Roller Girl" by Victoria Jamieson

Tiny Tots

Tiny Tots

Baby Playdate

Baby Playdate

Frequently Asked Questions

Time for Twos

Family Fun: Farm Art