Black Canyon of the Gunnison National Park vs Yellowstone National Park in September

Black Canyon of the Gunnison National Park is the better pick in September — 89 vs 84 on SeasonMap's comfort score. Black Canyon of the Gunnison National Park is warm, a little rain, clean air, while Yellowstone National Park is cool, a little rain, clean air.

Black Canyon of the Gunnison National Park vs Yellowstone National Park — September climate, side by side

	🇺🇸 Black Canyon of the Gunnison National Park	🇺🇸 Yellowstone National Park
Comfort score	89/100 (A)	84/100 (A)
Feels-like high	24°C	14°C
Avg high / low	26° / 4°	17° / 1°
Rainfall	31 mm	59 mm
Rainy days	5	11
Humidity	39%	59%
Air quality (AQI)	38	43

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

Month by month

Black Canyon of the Gunnison National Park vs Yellowstone National Park in September — FAQ

Is September better in Black Canyon of the Gunnison National Park or Yellowstone National Park?: Black Canyon of the Gunnison National Park is the better pick in September — 89 vs 84 on SeasonMap's comfort score. Black Canyon of the Gunnison National Park is warm, a little rain, clean air, while Yellowstone National Park is cool, a little rain, clean air.
What is the weather like in Black Canyon of the Gunnison National Park vs Yellowstone National Park in September?: In September, Black Canyon of the Gunnison National Park averages 26°C high / 4°C low with about 31 mm of rain; Yellowstone National Park averages 17°C high / 1°C low with about 59 mm.