Stillwater (OK)
September
Weather in Stillwater, Oklahoma for September 2025
Your guide to Stillwater weather in September - trends and predictions
In general, the average temperature in Stillwater at the beginning of September is 29.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.6 °F by the end of September.
Stillwater experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 51.9 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
31°/18°
Temperatures
19 km/h
Avg max wind
54 %
Avg humidity
Stillwater Weather September
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Temperatures trend during September in Stillwater
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September weather in Stillwater day by day
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Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
Sept. 1 | Sunny | 33° /21° | 0 mm | 8 | |
Sept. 2 | Sunny | 30° /20° | 0 mm | 8 | |
Sept. 3 | Overcast | 25° /20° | 0 mm | 6 | |
Sept. 4 | Overcast | 28° /19° | 0 mm | 6 | |
Sept. 5 | Overcast | 30° /19° | 0 mm | 7 | |
Sept. 6 | Cloudy | 32° /20° | 0 mm | 7 | |
Sept. 7 | Partly cloudy | 28° /17° | 0 mm | 7 | |
Sept. 8 | Sunny | 29° /15° | 0 mm | 7 | |
Sept. 9 | Sunny | 30° /15° | 0 mm | 8 | |
Sept. 10 | Sunny | 32° /15° | 0 mm | 8 | |
Sept. 11 | Partly cloudy | 33° /17° | 0 mm | 8 | |
Sept. 12 | Partly cloudy | 32° /19° | 0 mm | 8 | |
Sept. 13 | Sunny | 33° /18° | 0 mm | 8 | |
Sept. 14 | Moderate or heavy rain shower | 33° /17° | 3.2 mm | 7 | |
Sept. 15 | Patchy rain possible | 33° /19° | 0.2 mm | 7 | |
Sept. 16 | Overcast | 32° /18° | 0 mm | 7 | |
Sept. 17 | Overcast | 31° /20° | 0 mm | 7 | |
Sept. 18 | Overcast | 34° /20° | 0 mm | 7 | |
Sept. 19 | Heavy rain at times | 38° /23° | 1.2 mm | 8 | |
Sept. 20 | Cloudy | 38° /23° | 1 mm | 8 | |
Sept. 21 | Partly cloudy | 36° /24° | 0.4 mm | 9 | |
Sept. 22 | Moderate or heavy rain shower | 27° /16° | 13.7 mm | 6 | |
Sept. 23 | Moderate or heavy rain shower | 24° /15° | 14 mm | 5 | |
Sept. 24 | Moderate or heavy rain shower | 26° /13° | 18.2 mm | 6 | |
Sept. 25 | Sunny | 28° /15° | 0 mm | 7 | |
Sept. 26 | Sunny | 27° /12° | 0 mm | 7 | |
Sept. 27 | Sunny | 28° /13° | 0 mm | 7 | |
Sept. 28 | Overcast | 29° /15° | 0 mm | 6 | |
Sept. 29 | Partly cloudy | 30° /15° | 0 mm | 8 | |
Sept. 30 | Mist | 32° /14° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Stillwater 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 Stillwater forecast closer to your planned date for the most up-to-date weather information.
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Stillwater in September - FAQ
What are the expected maximum and minimum temperatures in Stillwater during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Stillwater during September?
Moderate rainfall is anticipated in Stillwater during September, with a total of 51.9 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Stillwater during September?
The average wind speed in Stillwater during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Stillwater
Explore the daily rainfall trends and prepare for Stillwaters September weather 💧
UV exposure in Stillwater during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Stillwater, located at latitude 36.116 and longitude -97.058. Stay updated with localized weather information tailored for Stillwater.
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