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Things to Do in Oklahoma in September 2025

As the summer heat begins to mellow and crisp fall breezes drift in, September in Oklahoma is a sweet spot: the skies are clear, the foliage begins to hint at autumn color, and the calendar fills with festivals, food, music, and outdoor fun. Whether you’re a local or visiting, here are some of the best things to do this September.

1. Biggest Annual Events & Festivals

Oklahoma State Fair (Sept 11–21, 2025, OKC)
One of Oklahoma’s marquee events, the State Fair is a must. Expect carnival rides, agricultural showcases, concerts, food vendors (yes, the deep-fried and creative treats), rodeo events, and plenty of family-friendly attractions. It’s a great way to soak in local culture, sample classic fair food, and enjoy evening fairs when the weather cools.

Fiestas de las Américas (Sept 27, OKC)
Celebrate Hispanic Heritage Month with this vibrant festival in the Historic Capitol Hill district. There’s a parade, art, live music, food, pop-up markets, and plenty of things for all ages. Perfect for experiencing multicultural Oklahoma. 

Plaza District Festival (Sept 27, OKC)
Arts, local vendors, food trucks, live performances — this street-festival atmosphere is one of the most creative, fun-filled ways to spend a weekend. Great if you want to support local artisans, listen to live music, or try new food. 

Other Fall & Arts Festivals Across the State

• Tulsa has its lineup with events like the Tulsa Greek Festival and Broken Arrow Rose Festival. Festival Guides and Reviews
• Smaller towns also host fairs, craft shows, and seasonal gatherings (pumpkin patches, native plant festivals, etc

2. Arts, Music & Culture

Scissortail Park Concert Series (Sept 14, OKC)
Enjoy an evening outside with the Oklahoma City Philharmonic performing under the stars at Scissortail Park’s Love’s Travel Stops Stage & Great Lawn. If you enjoy orchestral music in a scenic, open-air setting, this is a lovely choice.

“Legends” Concert by the OKC Philharmonic (Sept 20)
For lovers of classical and orchestral works, this more formal concert at Civic Center Music Hall brings together compositions by artists like Rachmaninoff, Janáček, Tchaikovsky, and more. A great way to spend a cool fall evening. 

Museums & Galleries

• The Oklahoma City National Memorial & Museum is always poignant and especially reflective in September, as the anniversary of the 1995 bombing falls around this time.
• Botanical gardens, smaller galleries (especially in districts like the Paseo Arts District), and public art tours offer quieter, enriching experiences.

3. Outdoor Activities & Nature Escapes

State Parks & Natural Areas

• Sequoyah State Park Located on Fort Gibson Lake, this park offers hiking trails, scenic views, camping, nature trails, and a chance to unwind in nature.
• Tallgrass Prairie Preserve For wide open views, bison sightings, and peaceful drives/hikes. Especially beautiful as grasses shift from lush green toward golden tones.

Outdoor Activities in/near OKC

• Stroll through parks like Scissortail Park, Lake Hefner, Overholser, or the Oklahoma River area. Morning or evening walks, paddle boarding, or simply relaxing with friends outside.
• Visit botanical gardens and gardens in bloom — the Myriad Botanical Gardens is a good bet if you want a mix of landscaping, shade trees, water features, etc.