Coeur d'Alene (ID)
September
Weather in Coeur d'Alene, Idaho for September 2025
Your guide to Coeur d'Alene weather in September - trends and predictions
The forecast for the first days of September 2025 in Coeur d'Alene predicts a temperature of 29.9 °F, which is slightly above the historical average.
In general, the average temperature in Coeur d'Alene at the beginning of September is 29 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.7 °F by the end of September.
Coeur d'Alene experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 19.4 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
24°/11°
Temperatures
12 km/h
Avg max wind
48 %
Avg humidity
Coeur d'Alene Weather September
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Temperatures trend during September in Coeur d'Alene
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September weather in Coeur d'Alene day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 29° /10° | 0 mm | 5 | |
| Sept. 2 | Sunny | 32° /12° | 0 mm | 6 | |
| Sept. 3 | Sunny | 33° /13° | 0 mm | 6 | |
| Sept. 4 | Sunny | 30° /13° | 0 mm | 6 | |
| Sept. 5 | Sunny | 30° /10° | 0 mm | 5 | |
| Sept. 6 | Sunny | 23° /11° | 0 mm | 5 | |
| Sept. 7 | Sunny | 26° /10° | 0 mm | 5 | |
| Sept. 8 |  Partly cloudy | 34° /13° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 29° /15° | 0 mm | 7 | |
| Sept. 10 | Partly cloudy | 26° /12° | 0 mm | 7 | |
| Sept. 11 |  Moderate rain at times | 18° /11° | 1.3 mm | 4 | |
| Sept. 12 |  Heavy rain at times | 17° /9° | 5 mm | 4 | |
| Sept. 13 |  Cloudy | 21° /9° | 0 mm | 5 | |
| Sept. 14 |  Patchy rain possible | 21° /10° | 0.4 mm | 5 | |
| Sept. 15 | Cloudy | 21° /9° | 0 mm | 5 | |
| Sept. 16 | Sunny | 24° /8° | 0 mm | 6 | |
| Sept. 17 | Heavy rain at times | 16° /11° | 7.7 mm | 4 | |
| Sept. 18 |  Overcast | 20° /9° | 0 mm | 5 | |
| Sept. 19 | Cloudy | 22° /11° | 0 mm | 5 | |
| Sept. 20 | Sunny | 19° /8° | 0 mm | 5 | |
| Sept. 21 | Overcast | 20° /6° | 0 mm | 5 | |
| Sept. 22 | Overcast | 20° /9° | 0 mm | 5 | |
| Sept. 23 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 24 | Sunny | 27° /12° | 0 mm | 7 | |
| Sept. 25 | Patchy rain possible | 28° /13° | 4.1 mm | 6 | |
| Sept. 26 | Cloudy | 19° /9° | 0.1 mm | 4 | |
| Sept. 27 | Overcast | 22° /11° | 0 mm | 5 | |
| Sept. 28 | Cloudy | 25° /9° | 0 mm | 6 | |
| Sept. 29 | Moderate rain at times | 17° /8° | 0.8 mm | 4 | |
| Sept. 30 | Sunny | 14° /2° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Coeur d'Alene 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 Coeur d'Alene forecast closer to your planned date for the most up-to-date weather information.
Change Month
Coeur d'Alene in September - FAQ
What are the expected maximum and minimum temperatures in Coeur d'Alene during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Coeur d'Alene during September?
Expect minimal rainfall in Coeur d'Alene during September, with a total of 19.4 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Coeur d'Alene during September?
The average wind speed in Coeur d'Alene during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Coeur d'Alene
Explore the daily rainfall trends and prepare for Coeur d'Alenes September weather 💧
UV exposure in Coeur d'Alene during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Coeur d'Alene?Get accurate weather forecasts for Coeur d'Alene, located at latitude 47.678 and longitude -116.78. Stay updated with localized weather information tailored for Coeur d'Alene.
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