Farellones weather in September
September in Farellones: cold, soaked, with clean air — one of the best months to visit.
#2 of 12 months in Farellones · #164 of 604 destinations to visit in September · comfort 86/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Farellones climate normals — September
| Daytime high | 8°C / 46°F | 🧥 cold |
|---|---|---|
| Nighttime low | 2°C / 36°F | |
| Feels like (high) | 5°C / 41°F | |
| Rainfall | 161 mm / 6.3 in | ⛈ soaked |
| Rainy days | 17 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 2°C / 35°F | |
| Sunshine | 7.8 h/day | |
| Daylight | 11.8 h | |
| Wind | 11 km/h / 7 mph | |
| Snowfall | 68.9 cm / 27.1 in | |
| Air quality (US AQI) | 28 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Farellones?
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Farellones in September — FAQ
- Is September a good time to visit Farellones?
- September in Farellones: cold, soaked, with clean air — one of the best months to visit. It ranks #2 of 12 months for Farellones on SeasonMap's comfort score (86/100).
- What is the weather like in Farellones in September?
- In September, Farellones averages a daily high of 8°C and a low of 2.3°C, with about 160.5 mm of rain over roughly 17.4 rainy days.
- What is the air quality in Farellones in September?
- Farellones has a mean US Air Quality Index of about 28 in September.
- Does it snow in Farellones in September?
- Farellones sees roughly 68.9 cm of snowfall in September.