Black Canyon of the Gunnison National Park vs Rocky Mountain National Park in September

Black Canyon of the Gunnison National Park and Rocky Mountain National Park are nearly tied in September — 89 vs 90 on SeasonMap's comfort score. Black Canyon of the Gunnison National Park is warm, a little rain, clean air; Rocky Mountain National Park is cool, a little rain, clean air.

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

	🇺🇸 Black Canyon of the Gunnison National Park	🇺🇸 Rocky Mountain National Park
Comfort score	89/100 (A)	90/100 (S)
Feels-like high	24°C	15°C
Avg high / low	26° / 4°	18° / 6°
Rainfall	31 mm	41 mm
Rainy days	5	6
Humidity	39%	57%
Air quality (AQI)	38	40

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

Month by month

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

Is September better in Black Canyon of the Gunnison National Park or Rocky Mountain National Park?: Black Canyon of the Gunnison National Park and Rocky Mountain National Park are nearly tied in September — 89 vs 90 on SeasonMap's comfort score. Black Canyon of the Gunnison National Park is warm, a little rain, clean air; Rocky Mountain National Park is cool, a little rain, clean air.
What is the weather like in Black Canyon of the Gunnison National Park vs Rocky Mountain 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; Rocky Mountain National Park averages 18°C high / 6°C low with about 41 mm.