Great Smoky Mountains National Park in September
In September, Great Smoky Mountains National Park averages a high of 78°F and a low of 56°F, with 4.3 inches of precipitation (rain plus melted snow). About 1,102,000 people visit, the 6th busiest of 12 (busy). Days are 12 hours 21 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 78° / 56°F
- Precipitation
- 4.3in
- Snow
- 0in
- Daylight
- 12h 21m
- Visitors
- 1,102,000
- Crowds
- Busy
September is one of the best months to visit: mild weather with busy crowds.
Higher or lower in the park, expect a different picture: Mt Leconte, TN at 6,493 ft averages a September high of 61°F and a low of 44°F.
Weather 1991–2020 averages at Gatlinburg 2 SW, TN, 5 miles from the park's center, 1,454 ft. Second station higher up: Mt Leconte, TN, 6,493 ft, 3.9 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Chattahoochee River National Recreation Area | 83° / 63° | Very busy | Hot |
| Kennesaw Mountain National Battlefield Park | 80° / 62° | Very busy | Mild |
| Blue Ridge Parkway | 75° / 53° | Very busy | Mild, wet |
| Mammoth Cave National Park | 85° / 60° | Busy | Hot |
| Congaree National Park | 86° / 64° | Busy | Hot |
Closures, reservations and alerts: Great Smoky Mountains National Park on nps.gov
All twelve months at Great Smoky Mountains · National parks to visit in September