Vail weather in September
September in Vail: nice, dry, with clean air — not the best time to visit.
#10 of 12 months in Vail · #601 of 604 destinations to visit in September · comfort 23/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Vail climate normals — September
| Daytime high | 21°C / 71°F | 😎 nice |
|---|---|---|
| Nighttime low | 7°C / 44°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 25 mm / 1 in | ☀️ dry |
| Rainy days | 5 days | |
| Humidity | 53% | 🍃 comfortable |
| Dew point | 3°C / 37°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 2.3 cm / 0.9 in | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Vail?
Loading map…
Vail in September — FAQ
- Is September a good time to visit Vail?
- September in Vail: nice, dry, with clean air — not the best time to visit. It ranks #10 of 12 months for Vail on SeasonMap's comfort score (23/100).
- What is the weather like in Vail in September?
- In September, Vail averages a daily high of 21.4°C and a low of 6.5°C, with about 25.3 mm of rain over roughly 5.4 rainy days.
- What is the air quality in Vail in September?
- Vail has a mean US Air Quality Index of about 43 in September.
- Does it snow in Vail in September?
- Vail sees roughly 2.3 cm of snowfall in September.