Events and Things to do in O'Fallon, MO
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2026 Spring Open House - Wedding Product & Service Vendor Event
Sun, Jun 14, 12:00 PM
Saint Clair · Lost Hill Lake Wedding & Events
2026 Spring Open House - Wedding Product & Service Vendor Event
Sun, Jun 14, 12:00 PM
Saint Clair · Lost Hill Lake Wedding & Events
Puff n Paint: Juicy Joint @ the Lit n Lost 420 Cannabash
Sat, Apr 18, 2:00 PM
Saint Clair · Lost Hill Lake Events
Puff n Paint: Juicy Joint @ the Lit n Lost 420 Cannabash
Sat, Apr 18, 2:00 PM
Saint Clair · Lost Hill Lake Events
PMP Live Instructor Led Certification Training Bootcamp Cahokia, IL
Sat, Mar 21, 9:00 AM + 1 more
Collinsville · Cahokia Mounds State Historic Site
PMP Live Instructor Led Certification Training Bootcamp Cahokia, IL
Sat, Mar 21, 9:00 AM + 1 more
Collinsville · Cahokia Mounds State Historic Site
2026 Fall Open House - Wedding Product & Service Vendor Event
Sun, Sep 20, 12:00 PM
Saint Clair · Lost Hill Lake Wedding & Events
2026 Fall Open House - Wedding Product & Service Vendor Event
Sun, Sep 20, 12:00 PM
Saint Clair · Lost Hill Lake Wedding & Events
Lunch with Kim and Mary- An Exclusive Blue Owl Experience
Thursday at 11:00 AM
Kimmswick · The Blue Owl Restaurant & Bakery
Lunch with Kim and Mary- An Exclusive Blue Owl Experience
Thursday at 11:00 AM
Kimmswick · The Blue Owl Restaurant & Bakery
Paint Nite Brand Creative Events
Wednesday at 6:30 PM
St. Clair · Blondie’s Breezeway Kitchen & Cocktails
Paint Nite Brand Creative Events
Wednesday at 6:30 PM
St. Clair · Blondie’s Breezeway Kitchen & Cocktails
Faith, Fellowship, and Freedom A Celebration of Testimonies
Sun, Apr 26, 3:00 PM
East St. Louis · East St Louis New Jerusalem SDA Church
Faith, Fellowship, and Freedom A Celebration of Testimonies
Sun, Apr 26, 3:00 PM
East St. Louis · East St Louis New Jerusalem SDA Church
RHYTHM & FLOW — THE GROWN FOLKS MUSIC CHALLENGE
Fri, Apr 3, 7:00 PM
Cahokia Heights · TEAM ARMSTEAD COMMUNITY CENTER
RHYTHM & FLOW — THE GROWN FOLKS MUSIC CHALLENGE
Fri, Apr 3, 7:00 PM
Cahokia Heights · TEAM ARMSTEAD COMMUNITY CENTER
Welcoming Spring Yin Yoga + Pranayama with Jill Thompson
Sun, Mar 29, 1:00 PM
Edwardsville · SIUE Visitor Parking (Lot B)
Welcoming Spring Yin Yoga + Pranayama with Jill Thompson
Sun, Mar 29, 1:00 PM
Edwardsville · SIUE Visitor Parking (Lot B)
Always A Cougar Graduation Celebration - May 7, 2026
Thu, May 7, 5:00 PM
Edwardsville · Morris University Center
Always A Cougar Graduation Celebration - May 7, 2026
Thu, May 7, 5:00 PM
Edwardsville · Morris University Center
EQUINOX 3.21 — The Resonance Gathering in the Fuller Dome
Sat, Mar 21, 3:00 PM
Edwardsville · SIUE Visitor Parking (Lot B)
EQUINOX 3.21 — The Resonance Gathering in the Fuller Dome
Sat, Mar 21, 3:00 PM
Edwardsville · SIUE Visitor Parking (Lot B)
KSHE 95 Rock Party @ Miners Theatre featuring Klose Kuarters & Lane Narrows
Sat, Apr 4, 7:00 PM
Collinsville · Miners Theater
KSHE 95 Rock Party @ Miners Theatre featuring Klose Kuarters & Lane Narrows
Sat, Apr 4, 7:00 PM
Collinsville · Miners Theater
Frequently asked questions about O'Fallon