South Lake Tahoe weather in September
September in South Lake Tahoe: nice, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in South Lake Tahoe · #51 of 604 destinations to visit in September · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
South Lake Tahoe climate normals — September
| Daytime high | 23°C / 74°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 54°F | |
| Feels like (high) | 21°C / 70°F | |
| Rainfall | 30 mm / 1.2 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 54% | 🍃 comfortable |
| Dew point | 6°C / 42°F | |
| Sunshine | 11.4 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 1.2 cm / 0.5 in | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is South Lake Tahoe?
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South Lake Tahoe in September — FAQ
- Is September a good time to visit South Lake Tahoe?
- September in South Lake Tahoe: nice, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for South Lake Tahoe on SeasonMap's comfort score (91/100).
- What is the weather like in South Lake Tahoe in September?
- In September, South Lake Tahoe averages a daily high of 23.2°C and a low of 12.4°C, with about 30.4 mm of rain over roughly 5.2 rainy days.
- What is the air quality in South Lake Tahoe in September?
- South Lake Tahoe has a mean US Air Quality Index of about 47 in September.
- Does it snow in South Lake Tahoe in September?
- South Lake Tahoe sees roughly 1.2 cm of snowfall in September.