Owasso (OK)
September
Weather in Owasso, Oklahoma for September 2025
Your guide to Owasso weather in September - trends and predictions
Until now, September 2025 in Owasso is slightly cooler than the historical average by -1.1 °F.
The forecast for the upcoming days in Owasso predicts a temperature of 32.7 °F, which is slightly above the historical average.
In general, the average temperature in Owasso at the beginning of September is 28 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 32.4 °F by the end of September.
With an average of 5 rainy days, Owasso experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
25
Dry days
5
Rainy days
0
Snow days
30°/18°
Temperatures
18 km/h
Avg max wind
56 %
Avg humidity
Owasso Weather September
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Temperatures trend during September in Owasso
See the weather trend as well as the moving average line
September weather in Owasso day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate rain at times | 31° /19° | 6.6 mm | 7 | |
| Sept. 2 |  Sunny | 30° /19° | 1.8 mm | 7 | |
| Sept. 3 |  Patchy rain possible | 26° /19° | 0.1 mm | 6 | |
| Sept. 4 |  Overcast | 28° /19° | 0 mm | 6 | |
| Sept. 5 |  Partly cloudy | 27° /17° | 0 mm | 7 | |
| Sept. 6 | Overcast | 28° /17° | 0 mm | 6 | |
| Sept. 7 | Partly cloudy | 26° /13° | 0 mm | 7 | |
| Sept. 8 | Sunny | 27° /14° | 0 mm | 7 | |
| Sept. 9 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 10 | Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 11 | Partly cloudy | 34° /19° | 0 mm | 8 | |
| Sept. 12 | Partly cloudy | 34° /18° | 0 mm | 9 | |
| Sept. 13 | Sunny | 34° /19° | 0 mm | 8 | |
| Sept. 14 |  Cloudy | 32° /19° | 0 mm | 7 | |
| Sept. 15 | Partly cloudy | 33° /20° | 0 mm | 8 | |
| Sept. 16 | Sunny | 36° /20° | 0 mm | 1.6 | |
| Sept. 17 |  Moderate rain | 30° /22° | 5.8 mm | 1.6 | |
| Sept. 18 | Moderate rain | 36° /22° | 6.2 mm | 0.9 | |
| Sept. 19 | Moderate rain | 32° /19° | 6.4 mm | 1.6 | |
| Sept. 20 | Patchy rain possible | 34° /20° | 0.5 mm | 0 | |
| Sept. 21 | Moderate rain | 30° /21° | 11 mm | 5 | |
| Sept. 22 | Moderate rain | 32° /20° | 6.1 mm | 5 | |
| Sept. 23 | Sunny | 32° /20° | 0 mm | 7 | |
| Sept. 24 | Sunny | 35° /21° | 0 mm | 7 | |
| Sept. 25 | Sunny | 35° /22° | 0 mm | 7 | |
| Sept. 26 | Patchy rain possible | 33° /22° | 0.3 mm | 6 | |
| Sept. 27 | Patchy rain possible | 31° /20° | 0.9 mm | 5 | |
| Sept. 28 | Sunny | 30° /20° | 0 mm | 6 | |
| Sept. 29 | Patchy rain possible | 32° /22° | 1.3 mm | 6 | |
| Sept. 30 | Sunny | 31° /15° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Owasso in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Owasso forecast closer to your planned date for the most up-to-date weather information.
Change Month
Owasso in September - FAQ
What are the expected maximum and minimum temperatures in Owasso during September?
Expect warm days with temperatures around 30°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Owasso during September?
In September, Owasso can expect light to moderate rainfall, totaling 41.3 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Owasso during September?
The average wind speed in Owasso during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Owasso
Explore the daily rainfall trends and prepare for Owassos September weather 💧
UV exposure in Owasso during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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