What is the weather like in Banff vs Calgary in September?

In September, Banff averages 18°C high / 3°C low with about 51 mm of rain; Calgary averages 20°C high / 6°C low with about 27 mm.

Banff vs Calgary in September

Calgary is the better pick in September — 86 vs 22 on SeasonMap's comfort score. Calgary is nice, dry, clean air, while Banff is nice, a little rain, clean air.

Banff vs Calgary — September climate, side by side

	🇨🇦 Banff	🇨🇦 Calgary
Comfort score	22/100 (F)	86/100 (A)
Feels-like high	16°C	17°C
Avg high / low	18° / 3°	20° / 6°
Rainfall	51 mm	27 mm
Rainy days	10	5
Humidity	72%	63%
Air quality (AQI)	36	41

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

Month by month

Banff 🇨🇦 Canadanice, a little rain, clean air · best February22
Calgary 🇨🇦 Canadanice, dry, clean air · best August86

Banff vs Calgary in September — FAQ

Is September better in Banff or Calgary?: Calgary is the better pick in September — 86 vs 22 on SeasonMap's comfort score. Calgary is nice, dry, clean air, while Banff is nice, a little rain, clean air.
What is the weather like in Banff vs Calgary in September?: In September, Banff averages 18°C high / 3°C low with about 51 mm of rain; Calgary averages 20°C high / 6°C low with about 27 mm.