What is the weather like in Denali National Park vs Yellowstone National Park in September?

In September, Denali National Park averages 10°C high / 4°C low with about 97 mm of rain; Yellowstone National Park averages 17°C high / 1°C low with about 59 mm.

Denali National Park vs Yellowstone National Park in September

Yellowstone National Park is the better pick in September — 84 vs 75 on SeasonMap's comfort score. Yellowstone National Park is cool, a little rain, clean air, while Denali National Park is cold, rainy, clean air.

Denali National Park vs Yellowstone National Park — September climate, side by side

	🇺🇸 Denali National Park	🇺🇸 Yellowstone National Park
Comfort score	75/100 (B)	84/100 (A)
Feels-like high	7°C	14°C
Avg high / low	10° / 4°	17° / 1°
Rainfall	97 mm	59 mm
Rainy days	17	11
Humidity	80%	59%
Air quality (AQI)	23	43

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Denali National Park 🇺🇸 United Statescold, rainy, clean air · best June75
Yellowstone National Park 🇺🇸 United Statescool, a little rain, clean air · best August84

Denali National Park vs Yellowstone National Park in September — FAQ

Is September better in Denali National Park or Yellowstone National Park?: Yellowstone National Park is the better pick in September — 84 vs 75 on SeasonMap's comfort score. Yellowstone National Park is cool, a little rain, clean air, while Denali National Park is cold, rainy, clean air.
What is the weather like in Denali National Park vs Yellowstone National Park in September?: In September, Denali National Park averages 10°C high / 4°C low with about 97 mm of rain; Yellowstone National Park averages 17°C high / 1°C low with about 59 mm.