What is the weather like in Sun Valley vs Vail in September?

In September, Sun Valley averages 22°C high / 3°C low with about 30 mm of rain; Vail averages 21°C high / 2°C low with about 36 mm.

Sun Valley vs Vail in September

Sun Valley and Vail are nearly tied in September — 18 vs 20 on SeasonMap's comfort score. Sun Valley is nice, dry, clean air; Vail is nice, a little rain, clean air.

Sun Valley vs Vail — September climate, side by side

	🇺🇸 Sun Valley	🇺🇸 Vail
Comfort score	18/100 (F)	20/100 (F)
Feels-like high	19°C	18°C
Avg high / low	22° / 3°	21° / 2°
Rainfall	30 mm	36 mm
Rainy days	5	7
Humidity	52%	54%
Air quality (AQI)	40	43

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

Month by month

Sun Valley 🇺🇸 United Statesnice, dry, clean air · best February18
Vail 🇺🇸 United Statesnice, a little rain, clean air · best January20

Sun Valley vs Vail in September — FAQ

Is September better in Sun Valley or Vail?: Sun Valley and Vail are nearly tied in September — 18 vs 20 on SeasonMap's comfort score. Sun Valley is nice, dry, clean air; Vail is nice, a little rain, clean air.
What is the weather like in Sun Valley vs Vail in September?: In September, Sun Valley averages 22°C high / 3°C low with about 30 mm of rain; Vail averages 21°C high / 2°C low with about 36 mm.