What is the weather like in Great Basin National Park vs Rocky Mountain National Park in September?

In September, Great Basin National Park averages 14°C high / 3°C low with about 31 mm of rain; Rocky Mountain National Park averages 18°C high / 6°C low with about 41 mm.

Great Basin National Park vs Rocky Mountain National Park in September

Great Basin National Park and Rocky Mountain National Park are nearly tied in September — 87 vs 90 on SeasonMap's comfort score. Great Basin National Park is cool, a little rain, clean air; Rocky Mountain National Park is cool, a little rain, clean air.

Great Basin National Park vs Rocky Mountain National Park — September climate, side by side

	🇺🇸 Great Basin National Park	🇺🇸 Rocky Mountain National Park
Comfort score	87/100 (A)	90/100 (S)
Feels-like high	11°C	15°C
Avg high / low	14° / 3°	18° / 6°
Rainfall	31 mm	41 mm
Rainy days	4	6
Humidity	33%	57%
Air quality (AQI)	44	40

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

Month by month

Great Basin National Park vs Rocky Mountain National Park in September — FAQ

Is September better in Great Basin National Park or Rocky Mountain National Park?: Great Basin National Park and Rocky Mountain National Park are nearly tied in September — 87 vs 90 on SeasonMap's comfort score. Great Basin National Park is cool, a little rain, clean air; Rocky Mountain National Park is cool, a little rain, clean air.
What is the weather like in Great Basin National Park vs Rocky Mountain National Park in September?: In September, Great Basin National Park averages 14°C high / 3°C low with about 31 mm of rain; Rocky Mountain National Park averages 18°C high / 6°C low with about 41 mm.