Arches National Park in September
In September, Arches National Park averages a high of 87°F and a low of 58°F, with 0.9 inches of precipitation (rain plus melted snow). About 155,000 people visit, the 5th 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
- 87° / 58°F
- Precipitation
- 0.9in
- Snow
- 0in
- Daylight
- 12h 23m
- Visitors
- 155,000
- Crowds
- Very busy
Best months for weather and crowds instead: March (busy) and November (moderate).
Higher or lower in the park, expect a different picture: La Sal 1SW, UT at 6,787 ft averages a September high of 75°F and a low of 48°F.
Weather 1991–2020 averages at Arches NP Hqs, UT, 6.5 miles from the park's center, 4,093 ft. Second station higher up: La Sal 1SW, UT, 6,787 ft, 33.2 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Canyonlands National Park | 84° / 51° | Very busy | Hot |
| Capitol Reef National Park | 80° / 55° | Very busy | Mild, wet |
| Black Canyon of the Gunnison National Park | 72° / 44° | Very busy | Mild, wet |
| Glen Canyon National Recreation Area | 88° / 60° | Busy | Hot |
| Mesa Verde National Park | 76° / 50° | Busy | Mild, wet |
Closures, reservations and alerts: Arches National Park on nps.gov
All twelve months at Arches · National parks to visit in September