Denali National Park (AK)
September
Weather in Denali National Park, Alaska for September 2025
Your guide to Denali National Park weather in September - trends and predictions
In general, the average temperature in Denali National Park at the beginning of September is 15.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 5.1 °F by the end of September.
Denali National Park in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 79.8 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
10°/4°
Temperatures
11 km/h
Avg max wind
83 %
Avg humidity
Denali National Park Weather September
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Temperatures trend during September in Denali National Park
See the weather trend as well as the moving average line
September weather in Denali National Park day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 14° /5° | 0 mm | 4 | |
| Sept. 2 | Partly cloudy | 15° /5° | 0 mm | 5 | |
| Sept. 3 |  Overcast | 17° /7° | 0 mm | 4 | |
| Sept. 4 |  Cloudy | 13° /6° | 0.1 mm | 3 | |
| Sept. 5 | Overcast | 16° /7° | 0 mm | 4 | |
| Sept. 6 |  Moderate or heavy rain shower | 17° /8° | 7.2 mm | 4 | |
| Sept. 7 |  Patchy rain possible | 15° /9° | 1.9 mm | 3 | |
| Sept. 8 |  Heavy rain at times | 11° /8° | 5.8 mm | 3 | |
| Sept. 9 | Patchy rain possible | 13° /5° | 0.4 mm | 3 | |
| Sept. 10 | Moderate or heavy rain shower | 11° /7° | 14.3 mm | 3 | |
| Sept. 11 | Cloudy | 12° /4° | 0 mm | 3 | |
| Sept. 12 | Patchy rain possible | 10° /5° | 2.6 mm | 3 | |
| Sept. 13 | Patchy rain possible | 10° /6° | 0.8 mm | 3 | |
| Sept. 14 | Patchy rain possible | 9° /4° | 0.3 mm | 2 | |
| Sept. 15 | Moderate or heavy rain shower | 11° /6° | 5.4 mm | 3 | |
| Sept. 16 | Moderate or heavy rain shower | 8° /5° | 14.7 mm | 2 | |
| Sept. 17 | Overcast | 8° /3° | 1.2 mm | 2 | |
| Sept. 18 | Moderate rain at times | 9° /4° | 2.1 mm | 2 | |
| Sept. 19 | Moderate or heavy rain shower | 6° /2° | 13 mm | 2 | |
| Sept. 20 | Patchy rain possible | 7° /1° | 0.3 mm | 2 | |
| Sept. 21 | Overcast | 6° /0° | 0.1 mm | 2 | |
| Sept. 22 | Overcast | 6° /0° | 0 mm | 2 | |
| Sept. 23 | Overcast | 6° /2° | 0.5 mm | 2 | |
| Sept. 24 | Patchy rain possible | 4° /2° | 2.7 mm | 1 | |
| Sept. 25 | Patchy rain possible | 3° /2° | 2 mm | 1 | |
| Sept. 26 | Patchy rain possible | 3° /1° | 2.1 mm | 1 | |
| Sept. 27 | Patchy rain possible | 4° /0° | 2.3 mm | 1 | |
| Sept. 28 | Cloudy | 6° /-1° | 0 mm | 2 | |
| Sept. 29 | Partly cloudy | 8° /-1° | 0 mm | 3 | |
| Sept. 30 | Partly cloudy | 8° /0° | 0 mm | 3 | |
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Important Notice
Our weather forecast for Denali National Park 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 Denali National Park forecast closer to your planned date for the most up-to-date weather information.
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Denali National Park in September - FAQ
What are the expected maximum and minimum temperatures in Denali National Park during September?
Prepare for cooler days with highs just around 10° and colder nights, dipping below 4°.
How much rainfall should be expected in Denali National Park during September?
Moderate rainfall is anticipated in Denali National Park during September, with a total of 79.8 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Denali National Park during September?
The average wind speed in Denali National Park during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Denali National Park
Explore the daily rainfall trends and prepare for Denali National Parks September weather 💧
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Where is Denali National Park?Get accurate weather forecasts for Denali National Park, located at latitude 63.541 and longitude -151.724. Stay updated with localized weather information tailored for Denali National Park.
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