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

In September, Boise averages 27°C high / 12°C low with about 8 mm of rain; Calgary averages 20°C high / 6°C low with about 27 mm.

Boise vs Calgary in September

Boise is the better pick in September — 94 vs 86 on SeasonMap's comfort score. Boise is warm, dry, clean air, while Calgary is nice, dry, clean air.

Boise vs Calgary — September climate, side by side

	🇺🇸 Boise	🇨🇦 Calgary
Comfort score	94/100 (S)	86/100 (A)
Feels-like high	25°C	17°C
Avg high / low	27° / 12°	20° / 6°
Rainfall	8 mm	27 mm
Rainy days	3	5
Humidity	41%	63%
Air quality (AQI)	40	41

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

Month by month

Boise 🇺🇸 United Stateswarm, dry, clean air · best September94
Calgary 🇨🇦 Canadanice, dry, clean air · best August86

Boise vs Calgary in September — FAQ

Is September better in Boise or Calgary?: Boise is the better pick in September — 94 vs 86 on SeasonMap's comfort score. Boise is warm, dry, clean air, while Calgary is nice, dry, clean air.
What is the weather like in Boise vs Calgary in September?: In September, Boise averages 27°C high / 12°C low with about 8 mm of rain; Calgary averages 20°C high / 6°C low with about 27 mm.