Oklahoma City Weather in September
With daytime temperatures of 30°C (86°F) and nighttime lows of 17°C (63°F), September in Oklahoma City brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 80 mm (3.1 in) falls on average.
Rainfall in Oklahoma City in September
Expect around 8 days of rain based on historical data, with 80 mm (3.1 in) average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Oklahoma City in September
Expect highs of 30°C (86°F) in Oklahoma City in September, with nights dropping to around 17°C (63°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Oklahoma City in September
Expect a lot of sunshine this month, with about 292 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Oklahoma City in September
September has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.If you prefer enjoying temperate temperatures and rain-free days, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Oklahoma City's climate page.
Oklahoma City Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
30°C (86°F)
Chance of Rain
27%
Precipitation
80 mm (3.1 in)
Rainy days
8 days
Humidity
51%
Windspeed
5 m/s (10 knots)
Sunshine
292 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Oklahoma City typically drop from around 32°C (90°F) at the start of September to approximately 27°C (81°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 21°C (70°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Oklahoma City in September
Browse day-by-day weather records for Oklahoma City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Oklahoma City historical weather extremes in September
Based on 49 years of weather observations in Oklahoma City between 1976 and 2025, these are the recorded extremes.
- The hottest September day on record in Oklahoma City reached 42°C (108°F) (September 2, 2000).
- The coldest night in September in Oklahoma City was on September 24, 1989, with a minimum of 3°C (37°F).
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
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What to Wear in Oklahoma City in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Oklahoma City in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Oklahoma City's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Oklahoma City climate overview or explore weather in the United States of America.
