Weather in Grants Pass, Oregon for September 2026
Until now, September 2026 in Grants Pass is cooler than usual, with temperatures averaging 24.6 °F, this is 2.6 °F below the typical seasonal average.
The forecast for the next days in Grants Pass predicts temperatures to be around 26 °F, close to the historical average.
In general, the average temperature in Grants Pass at the beginning of September is 29.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.7 °F by the end of September.
With an average of 5 rainy days, Grants Pass experiences minimal rainfall in September.
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Grants Pass Weather September
Temperatures trend during September in Grants Pass
September weather in Grants Pass day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Cloudy | 29° /12° | 0 mm | 6 | |
| Sept. 2 |  Sunny | 27° /11° | 20.5 mm | 6 | |
| Sept. 3 |  Partly cloudy | 28° /11° | 1.7 mm | 7 | |
| Sept. 4 | Sunny | 29° /14° | 4.2 mm | 6 | |
| Sept. 5 | Sunny | 31° /14° | 0 mm | 8 | |
| Sept. 6 | Cloudy | 31° /14° | 0 mm | 7 | |
| Sept. 7 |  Overcast | 29° /12° | 0 mm | 6 | |
| Sept. 8 | Sunny | 29° /13° | 2.9 mm | 7 | |
| Sept. 9 | Sunny | 29° /12° | 0 mm | 7 | |
| Sept. 10 | Sunny | 28° /13° | 0 mm | 6 | |
| Sept. 11 | Overcast | 22° /10° | 1.1 mm | 5 | |
| Sept. 12 | Overcast | 23° /8° | 0 mm | 5 | |
| Sept. 13 | Overcast | 25° /9° | 0.3 mm | 6 | |
| Sept. 14 | Partly cloudy | 24° /8° | 1.8 mm | 6 | |
| Sept. 15 | Overcast | 24° /8° | 0 mm | 5 | |
| Sept. 16 | Overcast | 27° /9° | 0.2 mm | 6 | |
| Sept. 17 |  Patchy rain possible | 23° /12° | 3.1 mm | 6 | |
| Sept. 18 | Sunny | 27° /10° | 0 mm | 5.7 | |
| Sept. 19 | Overcast | 29° /10° | 0 mm | 5.7 | |
| Sept. 20 | Sunny | 29° /11° | 0 mm | 5.7 | |
| Sept. 21 | Sunny | 25° /11° | 0 mm | 6 | |
| Sept. 22 | Sunny | 26° /8° | 0 mm | 7 | |
| Sept. 23 | Sunny | 33° /10° | 0 mm | 8 | |
| Sept. 24 | Sunny | 34° /14° | 0 mm | 8 | |
| Sept. 25 | Overcast | 29° /15° | 0 mm | 6 | |
| Sept. 26 | Overcast | 22° /12° | 0.9 mm | 5 | |
| Sept. 27 |  Mist | 17° /8° | 0 mm | 5 | |
| Sept. 28 | Overcast | 22° /6° | 0 mm | 6 | |
| Sept. 29 | Sunny | 24° /9° | 0 mm | 6 | |
| Sept. 30 | Sunny | 25° /8° | 0 mm | 6 | |
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Grants Pass in September - FAQ
What are the expected maximum and minimum temperatures in Grants Pass during September?
How much rainfall should be expected in Grants Pass during September?
What are the typical wind conditions in Grants Pass during September?
September rainfall patterns in Grants Pass
UV exposure in Grants Pass during September
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Where is Grants Pass?Get accurate weather forecasts for Grants Pass, located at latitude 42.439 and longitude -123.331. Stay updated with localized weather information tailored for Grants Pass.