Grand Canyon National Park in September
In September, Grand Canyon National Park averages a high of 76°F and a low of 44°F, with 1.5 inches of precipitation (rain plus melted snow). About 436,000 people visit, the 7th busiest of 12 (very busy). Days are 12 hours 22 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 76° / 44°F
- Precipitation
- 1.5in
- Snow
- 0in
- Daylight
- 12h 22m
- Visitors
- 436,000
- Crowds
- Very busy
Best months for weather and crowds instead: April (very busy), May (very busy) and October (very busy).
Higher or lower in the park, expect a different picture: Phantom Rch, AZ at 2,530 ft averages a September high of 95°F and a low of 66°F.
Weather 1991–2020 averages at Grand Canyon NP 2, AZ, 19.6 miles from the park's center, 6,785 ft. Second station lower down: Phantom Rch, AZ, 2,530 ft, 18.1 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Zion National Park | 91° / 61° | Very busy | Very hot |
| Bryce Canyon National Park | 70° / 42° | Very busy | Mild, wet |
| Glen Canyon National Recreation Area | 88° / 60° | Busy | Hot |
| Lake Mead National Recreation Area | 97° / 72° | Very busy | Very hot |
| Capitol Reef National Park | 80° / 55° | Very busy | Mild, wet |
Closures, reservations and alerts: Grand Canyon National Park on nps.gov
All twelve months at Grand Canyon · National parks to visit in September