Best September Festivals and Events in Oklahoma City in 2026
September is one of the best months to explore Oklahoma City. Summer may not be completely gone yet, but the city’s calendar is already shifting toward fall with fairs, outdoor festivals, live music, local art, science events, and community celebrations.
For 2026, there is even more to celebrate. Along with many of OKC’s annual September traditions, Oklahoma is marking the 100th anniversary of Route 66, adding another layer of local history and pride to events happening around the city.
Whether you are looking for family activities, live entertainment, arts and culture, or a classic Oklahoma tradition, there is plenty to add to your calendar. Here are some of the best September festivals and events in Oklahoma City in 2026, arranged by date.
Oklahoma Black Fashion Week Season 12 Gala — September 5, 2026
September’s cultural calendar opened with the Oklahoma Black Fashion Week Season 12 Gala, held on September 5 at Social Capital in Oklahoma City.
Oklahoma Black Fashion Week has become an important platform for fashion, creativity, and representation within the state. The organization highlights emerging Black designers, models, artists, and entrepreneurs while creating opportunities for local talent to connect with broader audiences.
The Season 12 Gala brought together fashion and community in one of Oklahoma City’s most creative venues. While the event has already taken place, it still deserves a place among the top Oklahoma City events in September 2026.
It also reflects how much Oklahoma City’s arts and cultural scene continues to grow. September festivals in OKC are not limited to large outdoor celebrations. Events like Oklahoma Black Fashion Week give residents and visitors another way to experience the city through design, creativity, and local talent.
For anyone interested in fashion and the arts, this is an annual event worth watching for future September calendars.
Oklahoma State Fair — September 17–27, 2026
For many Oklahomans, September means one thing: the State Fair is back.
The Oklahoma State Fair 2026 runs from September 17 through September 27 at OKC Fair Park, bringing 11 days of carnival rides, fair food, agricultural exhibitions, competitions, live entertainment, and family activities.
It is easily one of the biggest Oklahoma City events in September 2026, and for many families, visiting the fair has become an annual tradition.
There is plenty to explore throughout the day. Visitors can walk through agricultural and livestock exhibits, watch competitions, browse vendor booths, and take on the rides and games along the midway. And then there is the food.
Part of the fun of the Oklahoma State Fair is seeing what new creation has made its way onto the menu each year. From classic funnel cakes and corn dogs to barbecue, fried treats, and over-the-top desserts, the food alone is enough reason for some people to make the trip.
The 2026 fair is particularly special because this year’s theme is “The Midway of the Mother Road,” tying the celebration to the centennial of Route 66.
Route 66 officially turns 100 in 2026, making this a major year for Oklahoma, one of the states most closely connected to the historic highway. Special attractions and activities at the fair will recognize the Mother Road and its place in Oklahoma history.
If you are searching for things to do in Oklahoma City in September, the Oklahoma State Fair should be near the top of the list.
Observe the Moon Night — September 19, 2026
For a quieter—but equally memorable—September experience, look up.
Observe the Moon Night takes place on September 19 at the Science Museum Oklahoma, giving visitors the opportunity to explore astronomy and planetary science in a hands-on setting.
The evening is connected to International Observe the Moon Night, a worldwide celebration that encourages people to learn more about the Moon, space exploration, and the science behind what we see in the night sky.
Visitors can view the Moon and other celestial objects through telescopes while taking part in astronomy-themed activities at the museum.
The event is especially appealing for families looking for free events in Oklahoma City in September 2026. It combines education and entertainment without feeling like a classroom lesson.
Children can discover more about space, adults can ask questions and learn from experts, and everyone gets a reason to spend some time looking at the Oklahoma night sky.
You do not need to know anything about astronomy beforehand, either. Curiosity is enough.
For parents searching for family-friendly things to do in OKC, this is one of September’s more unique options.
Legends Festival Series — September 25–27, 2026
Music fans who are willing to make a short trip outside Oklahoma City can add the Legends Festival Series to their September plans.
The three-day outdoor music event runs from September 25 through September 27 at Legends Pubhouse & Venue in Chickasha.
The festival features multiple rock performers across the weekend, making it an option for anyone looking for live music beyond the events happening directly within Oklahoma City.
It is important to note that this festival is not located in Oklahoma City itself. Chickasha is southwest of the metro, so the Legends Festival Series works better as a nearby weekend trip for OKC residents and visitors who do not mind driving outside the city.
That said, September is a great month for exploring beyond the city limits. Pairing an Oklahoma City trip with a nearby festival is an easy way to experience more of central Oklahoma while taking advantage of the busy fall events calendar.
DiscoverFest — September 26, 2026
Families can start September 26 with a full day of hands-on learning at DiscoverFest at Science Museum Oklahoma.
Previously known as Tinkerfest, DiscoverFest is a free STEAM-focused celebration centered around science, technology, engineering, art, and mathematics.
The event runs from 9 a.m. to 4 p.m. and features dozens of interactive activities designed to encourage visitors to build, experiment, create, and explore.
Rather than simply walking through exhibits, children and adults can get directly involved. Activities may cover areas such as engineering, robotics, woodworking, design, technology, music, and hands-on problem-solving.
That makes DiscoverFest one of the strongest family-friendly events in Oklahoma City in September 2026, particularly for parents who want an activity that is both entertaining and educational.
Admission to the event is free, and visitors can also explore museum exhibits and other Science Museum Oklahoma attractions during their visit.
Because DiscoverFest is one of the museum’s popular annual events, arriving early or registering ahead when available can help make the day easier.
It is also possible to turn September 26 into a full day of exploring OKC. After spending the morning and early afternoon at Science Museum Oklahoma, families can head across town for another major community celebration.
Plaza District Festival — September 26, 2026
After a morning of science, September 26 can continue with art, food, music, and local businesses at the Plaza District Festival.
The annual festival takes place in Oklahoma City’s Plaza District, one of the city’s best-known creative neighborhoods.
Local visual artists, musicians, performers, food vendors, small businesses, and community groups come together for a full day of activities throughout the district. Visitors can browse artist booths, listen to live music, explore the neighborhood’s murals, stop inside local shops, and enjoy food from area restaurants and vendors.
The festival is held alongside the Plaza Walls Mural Expo, adding another visual element to the celebration and highlighting the street art that has helped make the district recognizable.
What makes this one of the best September festivals in Oklahoma City is that the neighborhood itself is part of the event.
Rather than taking place inside a single venue, the festival spreads through an established arts district filled with independent businesses, murals, restaurants, galleries, and gathering spaces. That creates an atmosphere that feels distinctly local.
For visitors who want to experience Oklahoma City beyond its major tourist attractions, the Plaza District Festival offers an easy introduction to the city’s creative community. It is especially worth considering if you enjoy supporting local artists, Oklahoma makers, independent businesses, and musicians.
Make the Most of September 2026 in Oklahoma City
One of the best parts about September in Oklahoma City is the variety.
You can spend one weekend walking the midway and trying fair food at the Oklahoma State Fair, spend another evening looking through a telescope at Science Museum Oklahoma, and finish the month surrounded by artists, musicians, murals, and local businesses in the Plaza District.
The final two weekends of September are particularly busy.
The Oklahoma State Fair continues through September 27, while the Legends Festival Series runs from September 25 through 27. On September 26 alone, families can start the day at DiscoverFest and then head to the Plaza District Festival later in the afternoon.
That makes the end of the month an especially good time for anyone searching for things to do in Oklahoma City in September 2026.
This year also carries extra meaning because of the Route 66 centennial. The historic Mother Road has long been connected to Oklahoma’s identity, communities, and road-trip culture, and its 100th anniversary gives both locals and visitors another reason to explore what the state has to offer.
Whether you have lived in Oklahoma City for years or you are planning a September visit, there is no shortage of ways to experience the city.
From longtime traditions such as the Oklahoma State Fair to free science events and neighborhood festivals, September offers something for nearly every age and interest.
Before heading out, make sure to check the official event websites for the latest schedules, admission details, parking information, and possible changes.
Then pick a weekend—or a few—and enjoy some of the best Oklahoma City festivals and events in September 2026.