Washington County (Fayetteville)
September
Weather in Washington County, Arkansas for September 2025
Your guide to Washington County weather in September - trends and predictions
In general, the average temperature in Washington County at the beginning of September is 27.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25 °F by the end of September.
Washington County experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 77.5 mm.
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Temperatures
Rain 🌧️
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20
Dry days
10
Rainy days
0
Snow days
28°/17°
Temperatures
16 km/h
Avg max wind
65 %
Avg humidity
Washington County Weather September
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Temperatures trend during September in Washington County
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September weather in Washington County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 29° /19° | 4.7 mm | 6 | |
| Sept. 2 |  Sunny | 29° /17° | 0 mm | 7 | |
| Sept. 3 |  Partly cloudy | 27° /18° | 0 mm | 7 | |
| Sept. 4 |  Overcast | 24° /16° | 0 mm | 5 | |
| Sept. 5 |  Patchy rain possible | 28° /17° | 0.2 mm | 6 | |
| Sept. 6 | Patchy rain possible | 30° /18° | 0.2 mm | 7 | |
| Sept. 7 | Sunny | 25° /13° | 0 mm | 6 | |
| Sept. 8 | Sunny | 25° /10° | 0 mm | 7 | |
| Sept. 9 | Sunny | 28° /11° | 0 mm | 7 | |
| Sept. 10 | Sunny | 30° /13° | 0 mm | 7 | |
| Sept. 11 | Moderate rain at times | 31° /18° | 1.6 mm | 7 | |
| Sept. 12 | Patchy rain possible | 26° /17° | 1.5 mm | 6 | |
| Sept. 13 | Patchy rain possible | 27° /16° | 2.9 mm | 6 | |
| Sept. 14 | Partly cloudy | 30° /14° | 0 mm | 7 | |
| Sept. 15 | Overcast | 27° /17° | 0 mm | 6 | |
| Sept. 16 | Patchy rain possible | 26° /18° | 0.6 mm | 6 | |
| Sept. 17 | Patchy rain possible | 28° /18° | 0.6 mm | 6 | |
| Sept. 18 | Patchy rain possible | 30° /19° | 0.2 mm | 7 | |
| Sept. 19 | Sunny | 31° /21° | 0 mm | 8 | |
| Sept. 20 | Sunny | 35° /23° | 0 mm | 9 | |
| Sept. 21 |  Heavy rain at times | 34° /24° | 1.5 mm | 7 | |
| Sept. 22 | Moderate or heavy rain shower | 29° /22° | 4.1 mm | 6 | |
| Sept. 23 | Moderate or heavy rain shower | 24° /19° | 58.5 mm | 5 | |
| Sept. 24 | Overcast | 21° /14° | 0.9 mm | 5 | |
| Sept. 25 |  Cloudy | 26° /14° | 0 mm | 6 | |
| Sept. 26 | Sunny | 26° /13° | 0 mm | 7 | |
| Sept. 27 | Overcast | 23° /13° | 0 mm | 5 | |
| Sept. 28 | Overcast | 25° /14° | 0 mm | 6 | |
| Sept. 29 | Cloudy | 27° /14° | 0 mm | 6 | |
| Sept. 30 |  Fog | 27° /14° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Washington County 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 Washington County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Washington County in September - FAQ
What are the expected maximum and minimum temperatures in Washington County during September?
During September, expect a variety of temperatures with highs around 28° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Washington County during September?
Moderate rainfall is anticipated in Washington County during September, with a total of 77.5 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Washington County during September?
The average wind speed in Washington County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Washington County
Explore the daily rainfall trends and prepare for Washington Countys September weather 💧
UV exposure in Washington County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Washington County?Get accurate weather forecasts for Washington County, located at latitude 36.063 and longitude -94.157. Stay updated with localized weather information tailored for Washington County.
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