Coeur d'Alene (ID)
September
Weather in Coeur d'Alene, Idaho for September 2026
Your guide to Coeur d'Alene weather in September - trends and predictions
In general, the average temperature in Coeur d'Alene at the beginning of September is 32 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.1 °C by the end of September.
Coeur d'Alene experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 32.9 mm.
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Temperatures
Rain 🌧️
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20
Dry days
10
Rainy days
0
Snow days
25°/13°
Temperatures
11 km/h
Avg max wind
47 %
Avg humidity
Coeur d'Alene Weather September
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Temperatures trend during September in Coeur d'Alene
See the weather trend as well as the moving average line
September weather in Coeur d'Alene day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 35° /18° | 0 mm | 9 | |
| Sept. 2 | Partly cloudy | 34° /18° | 0 mm | 9 | |
| Sept. 3 |  Cloudy | 31° /18° | 0 mm | 8 | |
| Sept. 4 |  Sunny | 31° /17° | 0 mm | 8 | |
| Sept. 5 | Sunny | 30° /14° | 0 mm | 8 | |
| Sept. 6 | Sunny | 32° /15° | 0 mm | 8 | |
| Sept. 7 |  Overcast | 31° /17° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 31° /14° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 27° /15° | 1.4 mm | 7 | |
| Sept. 10 | Partly cloudy | 26° /14° | 1.8 mm | 7 | |
| Sept. 11 |  Moderate rain at times | 19° /13° | 6.1 mm | 5 | |
| Sept. 12 |  Heavy rain at times | 20° /11° | 2.5 mm | 5 | |
| Sept. 13 | Cloudy | 24° /12° | 0 mm | 6 | |
| Sept. 14 |  Patchy rain possible | 21° /11° | 5.5 mm | 5 | |
| Sept. 15 | Cloudy | 21° /9° | 1.4 mm | 5 | |
| Sept. 16 | Sunny | 26° /9° | 0 mm | 7 | |
| Sept. 17 | Heavy rain at times | 22° /14° | 3.8 mm | 6 | |
| Sept. 18 | Overcast | 25° /13° | 0 mm | 7 | |
| Sept. 19 | Cloudy | 26° /13° | 0 mm | 7 | |
| Sept. 20 | Sunny | 24° /12° | 0 mm | 6 | |
| Sept. 21 | Overcast | 20° /9° | 0.8 mm | 5 | |
| Sept. 22 | Overcast | 20° /9° | 1 mm | 5 | |
| Sept. 23 | Sunny | 25° /10° | 0 mm | 7 | |
| Sept. 24 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 25 | Patchy rain possible | 28° /14° | 2 mm | 7 | |
| Sept. 26 | Cloudy | 19° /9° | 0.1 mm | 5 | |
| Sept. 27 | Overcast | 22° /10° | 0 mm | 5 | |
| Sept. 28 | Cloudy | 25° /12° | 0 mm | 7 | |
| Sept. 29 | Moderate rain at times | 18° /11° | 0.4 mm | 4 | |
| Sept. 30 | Sunny | 15° /7° | 6.2 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 25° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Coeur d'Alene during September?
In September, Coeur d'Alene can expect light to moderate rainfall, totaling 32.9 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Coeur d'Alene during September?
The average wind speed in Coeur d'Alene during September is 11 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 💧
Typically, Coeur d'Alene has 10 rainy days in September with a total of 32.9 mm of rainfall.
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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