Sequoia National Park weather in September
September in Sequoia National Park: nice, dry, with clean air — an excellent time to visit.
#3 of 12 months in Sequoia National Park · #50 of 604 destinations to visit in September · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Sequoia National Park climate normals — September
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 6°C / 44°F | |
| Feels like (high) | 16°C / 61°F | |
| Rainfall | 25 mm / 1 in | ☀️ dry |
| Rainy days | 5 days | |
| Humidity | 51% | 🍃 comfortable |
| Dew point | 0°C / 31°F | |
| Sunshine | 11.5 h/day | |
| Daylight | 12.4 h | |
| Wind | 9 km/h / 6 mph | |
| Snowfall | 0.3 cm / 0.1 in | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Sequoia National Park?
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Sequoia National Park in September — FAQ
- Is September a good time to visit Sequoia National Park?
- September in Sequoia National Park: nice, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for Sequoia National Park on SeasonMap's comfort score (91/100).
- What is the weather like in Sequoia National Park in September?
- In September, Sequoia National Park averages a daily high of 17.6°C and a low of 6.4°C, with about 24.8 mm of rain over roughly 5 rainy days.
- What is the air quality in Sequoia National Park in September?
- Sequoia National Park has a mean US Air Quality Index of about 45 in September.