Yosemite National Park in September
In September, Yosemite National Park averages a high of 83°F and a low of 51°F, with 0.4 inches of precipitation (rain plus melted snow). About 528,000 people visit, the 4th busiest of 12 (very busy). Days are 12 hours 23 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 83° / 51°F
- Precipitation
- 0.4in
- Snow
- –in
- Daylight
- 12h 23m
- Visitors
- 528,000
- Crowds
- Very busy
Best months for weather and crowds instead: May (busy) and October (busy).
Higher or lower in the park, expect a different picture: Tuolumne Meadows RS, CA at 8,694 ft averages a September high of 65°F and a low of 32°F.
Weather 1991–2020 averages at Yosemite Park HQ, CA, 6.8 miles from the park's center, 4,018 ft. Second station higher up: Tuolumne Meadows RS, CA, 8,694 ft, 11.1 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Kings Canyon National Park | 70° / 39° | Busy | Mild |
| Sequoia National Park | 70° / 39° | Busy | Mild |
| Pinnacles National Park | 92° / 48° | Moderate | Very hot |
| San Francisco Maritime National Historical Park | 70° / 56° | Busy | Mild |
| Death Valley National Park | 108° / 79° | Moderate | Very hot |
Closures, reservations and alerts: Yosemite National Park on nps.gov
All twelve months at Yosemite · National parks to visit in September