Weather in Spokane, Washington for September 2026
Until now, September 2026 in Spokane is cooler than usual, with temperatures averaging 21.6 °F, this is 4.7 °F below the typical seasonal average.
The forecast for the next days in Spokane predicts temperatures to be around 18 °F, close to the historical average.
In general, the average temperature in Spokane at the beginning of September is 28.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.3 °F by the end of September.
Spokane experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 25.7 mm.
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Spokane Weather September
Temperatures trend during September in Spokane
September weather in Spokane day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 33° /16° | 0.1 mm | 6 | |
| Sept. 2 | Overcast | 30° /16° | 8.9 mm | 6 | |
| Sept. 3 |  Sunny | 28° /16° | 6.8 mm | 6 | |
| Sept. 4 | Sunny | 26° /15° | 6.7 mm | 6 | |
| Sept. 5 | Sunny | 27° /12° | 0 mm | 7 | |
| Sept. 6 |  Cloudy | 29° /13° | 0 mm | 6 | |
| Sept. 7 | Sunny | 27° /14° | 11.2 mm | 5 | |
| Sept. 8 | Sunny | 29° /14° | 1.8 mm | 6 | |
| Sept. 9 | Sunny | 27° /14° | 1.9 mm | 6 | |
| Sept. 10 | Sunny | 28° /15° | 0.2 mm | 5 | |
| Sept. 11 | Overcast | 23° /14° | 6 mm | 5 | |
| Sept. 12 | Overcast | 24° /12° | 0.1 mm | 4 | |
| Sept. 13 | Sunny | 23° /12° | 4.3 mm | 5 | |
| Sept. 14 | Sunny | 21° /11° | 1.2 mm | 5 | |
| Sept. 15 | Sunny | 22° /10° | 0 mm | 5 | |
| Sept. 16 | Sunny | 27° /11° | 0 mm | 7 | |
| Sept. 17 | Overcast | 24° /13° | 3.4 mm | 6 | |
| Sept. 18 | Cloudy | 26° /12° | 0 mm | 6 | |
| Sept. 19 | Overcast | 25° /11° | 0 mm | 6 | |
| Sept. 20 | Sunny | 23° /10° | 0.2 mm | 6 | |
| Sept. 21 | Sunny | 27° /13° | 0 mm | 4.7 | |
| Sept. 22 | Overcast | 22° /15° | 0 mm | 4 | |
| Sept. 23 | Overcast | 19° /10° | 0 mm | 3.9 | |
| Sept. 24 | Overcast | 22° /9° | 0 mm | 4 | |
| Sept. 25 |  Patchy rain possible | 19° /9° | 3.5 mm | 2.8 | |
| Sept. 26 | Sunny | 14° /6° | 0 mm | 4 | |
| Sept. 27 | Overcast | 14° /7° | 0 mm | 3 | |
| Sept. 28 | Overcast | 14° /6° | 0 mm | 4 | |
| Sept. 29 | Overcast | 13° /6° | 1.8 mm | 4 | |
| Sept. 30 | Sunny | 11° /4° | 0 mm | 4 | |
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Spokane in September - FAQ
What are the expected maximum and minimum temperatures in Spokane during September?
How much rainfall should be expected in Spokane during September?
What are the typical wind conditions in Spokane during September?
September rainfall patterns in Spokane
UV exposure in Spokane during September
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Where is Spokane?Get accurate weather forecasts for Spokane, located at latitude 47.66 and longitude -117.429. Stay updated with localized weather information tailored for Spokane.