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

In September, Jackson averages 21°C high / 3°C low with about 41 mm of rain; Rocky Mountain National Park averages 18°C high / 6°C low with about 41 mm.

Jackson vs Rocky Mountain National Park in September

Rocky Mountain National Park is the better pick in September — 90 vs 20 on SeasonMap's comfort score. Rocky Mountain National Park is cool, a little rain, clean air, while Jackson is nice, a little rain, clean air.

Jackson vs Rocky Mountain National Park — September climate, side by side

	🇺🇸 Jackson	🇺🇸 Rocky Mountain National Park
Comfort score	20/100 (F)	90/100 (S)
Feels-like high	18°C	15°C
Avg high / low	21° / 3°	18° / 6°
Rainfall	41 mm	41 mm
Rainy days	7	6
Humidity	57%	57%
Air quality (AQI)	40	40

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

Month by month

Jackson 🇺🇸 United Statesnice, a little rain, clean air · best February20
Rocky Mountain National Park 🇺🇸 United Statescool, a little rain, clean air · best August90

Jackson vs Rocky Mountain National Park in September — FAQ

Is September better in Jackson or Rocky Mountain National Park?: Rocky Mountain National Park is the better pick in September — 90 vs 20 on SeasonMap's comfort score. Rocky Mountain National Park is cool, a little rain, clean air, while Jackson is nice, a little rain, clean air.
What is the weather like in Jackson vs Rocky Mountain National Park in September?: In September, Jackson averages 21°C high / 3°C low with about 41 mm of rain; Rocky Mountain National Park averages 18°C high / 6°C low with about 41 mm.