What is the weather like in Aspen vs Glacier National Park in September?

In September, Aspen averages 22°C high / 6°C low with about 30 mm of rain; Glacier National Park averages 14°C high / 4°C low with about 78 mm.

Aspen vs Glacier National Park in September

Glacier National Park is the better pick in September — 85 vs 20 on SeasonMap's comfort score. Glacier National Park is cool, a little rain, clean air, while Aspen is nice, a little rain, clean air.

Aspen vs Glacier National Park — September climate, side by side

	🇺🇸 Aspen	🇺🇸 Glacier National Park
Comfort score	20/100 (F)	85/100 (A)
Feels-like high	20°C	11°C
Avg high / low	22° / 6°	14° / 4°
Rainfall	30 mm	78 mm
Rainy days	6	10
Humidity	55%	65%
Air quality (AQI)	44	37

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

Month by month

Aspen vs Glacier National Park in September — FAQ

Is September better in Aspen or Glacier National Park?: Glacier National Park is the better pick in September — 85 vs 20 on SeasonMap's comfort score. Glacier National Park is cool, a little rain, clean air, while Aspen is nice, a little rain, clean air.
What is the weather like in Aspen vs Glacier National Park in September?: In September, Aspen averages 22°C high / 6°C low with about 30 mm of rain; Glacier National Park averages 14°C high / 4°C low with about 78 mm.