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Summer Events and Things to do in O'Fallon, IL

Brewing Basics - July 9, 2026
Thu, Jul 9, 1:00 PM
St. Louis · 1600 S 39th St
Brewing Basics - July 9, 2026
Thu, Jul 9, 1:00 PM
St. Louis · 1600 S 39th St
SIU Alumni Night @ The Muny
Fri, Aug 7, 6:00 PM
St. Louis · The Muny
SIU Alumni Night @ The Muny
Fri, Aug 7, 6:00 PM
St. Louis · The Muny
PMP Certification 4 Days Classroom Training in St. Louis, MO
Tue, Jun 23, 9:00 AM
St. Louis, MO · St. Louis, MO
PMP Certification 4 Days Classroom Training in St. Louis, MO
Tue, Jun 23, 9:00 AM
St. Louis, MO · St. Louis, MO
4th Annual: Sundresses & Linens Party
Sat, Sep 5, 7:00 PM
St. Louis · Treasures
4th Annual: Sundresses & Linens Party
Sat, Sep 5, 7:00 PM
St. Louis · Treasures
Lecture: Professor Eric Mumford
Sat, Jun 27, 1:00 PM
St. Louis · Pulitzer Arts Foundation
Lecture: Professor Eric Mumford
Sat, Jun 27, 1:00 PM
St. Louis · Pulitzer Arts Foundation
Almost full
L'Ecole No. 41 Wine Dinner with Special Guest
Thu, Jul 23, 6:00 PM
MAPLEWOOD · Vom Fass St. Louis
Almost full
L'Ecole No. 41 Wine Dinner with Special Guest
Thu, Jul 23, 6:00 PM
MAPLEWOOD · Vom Fass St. Louis
Howl at the Moon Energy Dance and Fire Ritual: Strawberry Moon Release
Sat, Jun 27, 7:30 PM
St. Louis · Empower Studios
Howl at the Moon Energy Dance and Fire Ritual: Strawberry Moon Release
Sat, Jun 27, 7:30 PM
St. Louis · Empower Studios
Lean Six Sigma Black Belt Training St Louis | Exam Voucher Included
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Lean Six Sigma Black Belt Training St Louis | Exam Voucher Included
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Lean Six Sigma Green Belt Training St Louis | Pass & Guaranteed To Run
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Lean Six Sigma Green Belt Training St Louis | Pass & Guaranteed To Run
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
St Louis PMP 2026 Certification | 4-Day Bootcamp to Advance Your Career
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
St Louis PMP 2026 Certification | 4-Day Bootcamp to Advance Your Career
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Atomic Tea Time: A Mid-Century Tea Party by Belleville Historical Society
Sat, Jul 25, 12:30 PM
Belleville · 6 Oak Knoll Pl
Atomic Tea Time: A Mid-Century Tea Party by Belleville Historical Society
Sat, Jul 25, 12:30 PM
Belleville · 6 Oak Knoll Pl
St Louis CAPM Certification | 4-Day Exam Prep Bootcamp with Guarantee
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
St Louis CAPM Certification | 4-Day Exam Prep Bootcamp with Guarantee
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
St Louis Lean Six Sigma Green & Black Belt | Process Improvement Training
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
St Louis Lean Six Sigma Green & Black Belt | Process Improvement Training
Tue, Jul 21, 9:00 AM + 11 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Puff n Paint Sea Turtles
Thu, Jun 25, 7:00 PM
St. Louis · The Church on Delmar
Puff n Paint Sea Turtles
Thu, Jun 25, 7:00 PM
St. Louis · The Church on Delmar
Annual Father’s Day Carshow
Sun, Jun 21, 12:00 PM
Ferguson · 501 S Florissant Rd Pavilion
Annual Father’s Day Carshow
Sun, Jun 21, 12:00 PM
Ferguson · 501 S Florissant Rd Pavilion
Lean Six Sigma Green Belt (LSSGB) Training St Louis, MO In-Person Class
Tue, Jul 7, 9:00 AM + 11 more
St Louis · Certification Planner LLC
Lean Six Sigma Green Belt (LSSGB) Training St Louis, MO In-Person Class
Tue, Jul 7, 9:00 AM + 11 more
St Louis · Certification Planner LLC
St Louis Salesforce Admin Certification Training | Updated & Guaranteed
Wed, Jul 29, 9:00 AM + 5 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
St Louis Salesforce Admin Certification Training | Updated & Guaranteed
Wed, Jul 29, 9:00 AM + 5 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Salesforce Administrator Training in St Louis with Trailhead & Practicals
Wed, Jul 29, 9:00 AM + 5 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Salesforce Administrator Training in St Louis with Trailhead & Practicals
Wed, Jul 29, 9:00 AM + 5 more
St Louis · 100 S 4th St Deloitte Building, Suite 550
Sales end soon
90s Bollywood party
Friday at 10:00 PM
St. Peters · Kush Hookah Lounge and Bar
Sales end soon
90s Bollywood party
Friday at 10:00 PM
St. Peters · Kush Hookah Lounge and Bar
Brew Like Me: V60 Pour-over July 31, 2026
Fri, Jul 31, 5:00 PM
St. Louis · 1600 S 39th St
Brew Like Me: V60 Pour-over July 31, 2026
Fri, Jul 31, 5:00 PM
St. Louis · 1600 S 39th St

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