What is the weather like in Aspen vs Lake Louise in September?

In September, Aspen averages 22°C high / 6°C low with about 30 mm of rain; Lake Louise averages 15°C high / 3°C low with about 57 mm.

Aspen vs Lake Louise in September

Lake Louise is the better pick in September — 32 vs 20 on SeasonMap's comfort score. Lake Louise is cool, a little rain, clean air, while Aspen is nice, a little rain, clean air.

Aspen vs Lake Louise — September climate, side by side

	🇺🇸 Aspen	🇨🇦 Lake Louise
Comfort score	20/100 (F)	32/100 (F)
Feels-like high	20°C	13°C
Avg high / low	22° / 6°	15° / 3°
Rainfall	30 mm	57 mm
Rainy days	6	12
Humidity	55%	72%
Air quality (AQI)	44	37

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

Month by month

Aspen vs Lake Louise in September — FAQ

Is September better in Aspen or Lake Louise?: Lake Louise is the better pick in September — 32 vs 20 on SeasonMap's comfort score. Lake Louise is cool, a little rain, clean air, while Aspen is nice, a little rain, clean air.
What is the weather like in Aspen vs Lake Louise in September?: In September, Aspen averages 22°C high / 6°C low with about 30 mm of rain; Lake Louise averages 15°C high / 3°C low with about 57 mm.