Weather in Sandpoint, Idaho for September 2026
Until now, September 2026 in Sandpoint has been significantly cooler than historical averages by 5.1 °F, with average temperature of 18.2 °F.
The forecast for the upcoming days in Sandpoint predicts a temperature of 16.5 °F, which is slightly above the historical average.
In general, the average temperature in Sandpoint at the beginning of September is 26.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.3 °F by the end of September.
Sandpoint experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 28.3 mm.
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Sandpoint Weather September
Temperatures trend during September in Sandpoint
September weather in Sandpoint day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 31° /15° | 0.2 mm | 6 | |
| Sept. 2 | Partly cloudy | 28° /14° | 39.4 mm | 6 | |
| Sept. 3 |  Cloudy | 25° /13° | 12.9 mm | 5 | |
| Sept. 4 |  Sunny | 24° /12° | 14.4 mm | 5 | |
| Sept. 5 | Sunny | 25° /10° | 0 mm | 7 | |
| Sept. 6 | Sunny | 28° /12° | 0.6 mm | 6 | |
| Sept. 7 | Partly cloudy | 24° /13° | 5.2 mm | 5 | |
| Sept. 8 | Partly cloudy | 26° /12° | 21.8 mm | 5 | |
| Sept. 9 | Sunny | 25° /12° | 0 mm | 6 | |
| Sept. 10 | Sunny | 25° /13° | 1.4 mm | 5 | |
| Sept. 11 |  Heavy rain at times | 18° /12° | 5.1 mm | 3 | |
| Sept. 12 |  Overcast | 19° /11° | 6.3 mm | 3 | |
| Sept. 13 |  Patchy rain possible | 20° /10° | 4.3 mm | 4 | |
| Sept. 14 |  Moderate rain at times | 16° /8° | 2.4 mm | 3 | |
| Sept. 15 | Patchy rain possible | 18° /9° | 0.1 mm | 3 | |
| Sept. 16 | Sunny | 23° /9° | 0 mm | 6 | |
| Sept. 17 | Patchy rain possible | 22° /11° | 0.1 mm | 5 | |
| Sept. 18 | Overcast | 24° /11° | 0 mm | 5 | |
| Sept. 19 | Overcast | 24° /10° | 0 mm | 5 | |
| Sept. 20 | Sunny | 23° /11° | 0 mm | 5 | |
| Sept. 21 | Overcast | 21° /10° | 0 mm | 4 | |
| Sept. 22 | Overcast | 20° /9° | 0 mm | 3 | |
| Sept. 23 | Overcast | 20° /8° | 0 mm | 3.7 | |
| Sept. 24 | Overcast | 22° /8° | 0 mm | 4 | |
| Sept. 25 | Overcast | 16° /6° | 4.7 mm | 3.3 | |
| Sept. 26 | Patchy rain possible | 14° /2° | 0.9 mm | 3.7 | |
| Sept. 27 | Overcast | 13° /4° | 0 mm | 3 | |
| Sept. 28 | Sunny | 13° /3° | 0 mm | 4 | |
| Sept. 29 | Overcast | 13° /3° | 0 mm | 4 | |
| Sept. 30 | Overcast | 16° /6° | 0 mm | 4 | |
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Sandpoint in September - FAQ
What are the expected maximum and minimum temperatures in Sandpoint during September?
How much rainfall should be expected in Sandpoint during September?
What are the typical wind conditions in Sandpoint during September?
September rainfall patterns in Sandpoint
UV exposure in Sandpoint during September
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Where is Sandpoint?Get accurate weather forecasts for Sandpoint, located at latitude 48.277 and longitude -116.553. Stay updated with localized weather information tailored for Sandpoint.