Mount Rushmore National Memorial in September
In September, Mount Rushmore National Memorial averages a high of 69°F and a low of 50°F, with 1.8 inches of precipitation (rain plus melted snow) and 0.9 inches of snowfall. About 280,000 people visit, the 4th busiest of 12 (moderate). Days are 12 hours 27 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 69° / 50°F
- Precipitation
- 1.8in
- Snow
- 0.9in
- Daylight
- 12h 27m
- Visitors
- 280,000
- Crowds
- Moderate
September is one of the best months to visit: mild weather with moderate crowds.
Higher or lower in the park, expect a different picture: Rapid City Rgnl AP, SD at 3,160 ft averages a September high of 76°F and a low of 46°F.
Weather 1991–2020 averages at Mt Rushmore Nmem, SD, 0.3 miles from the park's center, 5,311 ft. Second station lower down: Rapid City Rgnl AP, SD, 3,160 ft, 22.9 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Wind Cave National Park | 76° / 46° | Busy | Mild |
| Badlands National Park | 79° / 47° | Busy | Mild |
| Theodore Roosevelt National Park | 74° / 43° | Busy | Mild, wet |
| Rocky Mountain National Park | 68° / 32° | Busy | Mild, wet |
| Yellowstone National Park | 61° / 30° | Very busy | Mild |
Closures, reservations and alerts: Mount Rushmore National Memorial on nps.gov
All twelve months at Mount Rushmore National Memorial · National parks to visit in September