Sandpoint (ID)
September
Weather in Sandpoint, Idaho for September 2025
Your guide to Sandpoint weather in September - trends and predictions
In general, the average temperature in Sandpoint at the beginning of September is 30.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.6 °F by the end of September.
Sandpoint experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 28.5 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
23°/10°
Temperatures
11 km/h
Avg max wind
50 %
Avg humidity
Sandpoint Weather September
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Temperatures trend during September in Sandpoint
See the weather trend as well as the moving average line
September weather in Sandpoint day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 32° /13° | 0 mm | 8 | |
| Sept. 2 | Partly cloudy | 31° /14° | 0 mm | 8 | |
| Sept. 3 |  Cloudy | 26° /13° | 0 mm | 6 | |
| Sept. 4 |  Sunny | 28° /12° | 0 mm | 7 | |
| Sept. 5 | Sunny | 30° /11° | 0 mm | 8 | |
| Sept. 6 | Sunny | 32° /13° | 0 mm | 8 | |
| Sept. 7 | Partly cloudy | 32° /13° | 0 mm | 8 | |
| Sept. 8 | Partly cloudy | 32° /13° | 0 mm | 8 | |
| Sept. 9 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 10 | Sunny | 26° /13° | 0 mm | 7 | |
| Sept. 11 |  Heavy rain at times | 16° /11° | 1.3 mm | 4 | |
| Sept. 12 |  Moderate or heavy rain shower | 15° /10° | 18.9 mm | 4 | |
| Sept. 13 |  Patchy rain possible | 20° /9° | 0.4 mm | 5 | |
| Sept. 14 | Moderate rain at times | 19° /8° | 1.5 mm | 4 | |
| Sept. 15 | Patchy rain possible | 21° /7° | 0.2 mm | 5 | |
| Sept. 16 | Sunny | 24° /9° | 0 mm | 6 | |
| Sept. 17 | Patchy rain possible | 17° /11° | 0.2 mm | 4 | |
| Sept. 18 |  Overcast | 21° /11° | 0 mm | 5 | |
| Sept. 19 | Overcast | 21° /8° | 0 mm | 5 | |
| Sept. 20 | Sunny | 19° /9° | 0 mm | 5 | |
| Sept. 21 | Overcast | 19° /6° | 0 mm | 4 | |
| Sept. 22 | Overcast | 19° /8° | 0 mm | 4 | |
| Sept. 23 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 24 | Sunny | 26° /12° | 0 mm | 7 | |
| Sept. 25 | Patchy rain possible | 27° /13° | 3.9 mm | 6 | |
| Sept. 26 | Partly cloudy | 17° /9° | 1.9 mm | 5 | |
| Sept. 27 | Overcast | 19° /9° | 0 mm | 4 | |
| Sept. 28 | Cloudy | 24° /9° | 0 mm | 5 | |
| Sept. 29 | Patchy rain possible | 16° /8° | 0.2 mm | 4 | |
| Sept. 30 | Sunny | 15° /4° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Sandpoint 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 Sandpoint forecast closer to your planned date for the most up-to-date weather information.
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Sandpoint in September - FAQ
What are the expected maximum and minimum temperatures in Sandpoint during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sandpoint during September?
In September, Sandpoint can expect light to moderate rainfall, totaling 28.5 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Sandpoint during September?
The average wind speed in Sandpoint during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Sandpoint
Explore the daily rainfall trends and prepare for Sandpoints September weather 💧
UV exposure in Sandpoint during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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