Early autumn · Weather & things to do
Oklahoma City in September
Oklahoma City cools off: highs slip to 85°F (29°C), from 93°F in August, with lows of 63°F (17°C) and about 3.0 in (77 mm) of rain.
It scores 83/100 for comfort, 5th of 12, which makes it a solid shoulder-season month.
- Avg high
- 85°F (29°C)
- Avg low
- 63°F (17°C)
- Rain
- 3.0 in (77 mm)
- Humidity
- 64%
- Cloud cover
- 38%
- Daylight
- ~12 h 13 min
- Comfort score
- 83/100 · Great
What September feels like
Highs settle around 85°F (29°C), warm enough for short sleeves most of the day.
There's a big swing between day and night, about 12°C (22°F), so mornings and evenings feel much cooler than the afternoon.
Some rain is likely, about 3.0 in (77 mm) in the month, so pack for a shower or two.
Plan around September
September is shoulder season: good weather, a step below the best months (March & April and October & November).
- Comfort improves from 63/100 in August to 83/100.
- Our Oklahoma Route 66 route recommends Mar – May, so September falls outside its suggested window.
What to pack for September
- Light, breathable clotheshighs average 85°F
- Sunscreen, sunglasses and a hatstrong sun this month
- A warm layer for eveningsnights drop to 63°F
- Packable rain jacket or umbrellaabout 3.0 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in Oklahoma City in September
September is good outdoor weather here, so these picks lean toward the open air.
POPS 66
Route 66 soda stop with a 66-foot neon bottle and hundreds of soda flavors.
Myriad Botanical Gardens
Downtown gardens around the cylindrical Crystal Bridge conservatory.
Why now September scores 83/100 for comfort, good conditions for being outside.
Milk Bottle Grocery
Tiny 1930 building topped with a giant milk bottle on Route 66.
Picasso Cafe
Paseo Arts District restaurant with a patio and local art on the walls.
Why now Highs near 85°F and 3.0 in of monthly rain make this an easy outdoor pick.
Stonecloud Brewing Co.
Film Row taproom pouring well-regarded IPAs and pilsners.
Nearby in September
- Lake Hefner in September~8 mi · highs 85°F, 3.0 in rain · similar daytime temperatures, about as wet
- Wichita Mountains in September~84 mi · highs 85°F, 3.0 in rain · similar daytime temperatures, about as wet
- Tulsa in September~98 mi · highs 86°F, 3.4 in rain · similar daytime temperatures, about as wet
- Dallas in September~190 mi · highs 90°F, 3.0 in rain · 3°C (5°F) warmer by day, about as wet
These averages also cover Downtown OKC & Bricktown.
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Oklahoma City in September: quick answers
Is September a good time to visit Oklahoma City?
It's a good shoulder-season choice, scoring 83/100 against a best of 92 in March & April and October & November. Expect highs of 85°F (29°C) and 3.0 in (77 mm) of rain. Our Oklahoma Route 66 route recommends Mar – May, so September is outside its suggested window.
How hot is Oklahoma City in September?
Average highs are 85°F (29°C) and average lows 63°F (17°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Oklahoma City in September?
Some: about 3.0 in (77 mm) of rain falls across September on average, the 6th-driest month of the year. The annual total is about 34.6 in (878 mm).
What should I pack for Oklahoma City in September?
Bring light, breathable clothes (highs average 85°F), sunscreen, sunglasses and a hat (strong sun this month), a warm layer for evenings (nights drop to 63°F), packable rain jacket or umbrella (about 3.0 in of rain) and comfortable walking shoes (most picks involve some walking).
More on Oklahoma City
Planning Oklahoma City in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.