Mammoth Cave National Park in August
In August, Mammoth Cave National Park averages a high of 90°F and a low of 67°F, with 3.8 inches of precipitation (rain plus melted snow). About 76,000 people visit, the 3rd busiest of 12 (busy). Days are 13 hours 35 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 90° / 67°F
- Precipitation
- 3.8in
- Snow
- 0in
- Daylight
- 13h 35m
- Visitors
- 76,000
- Crowds
- Busy
Best months for weather and crowds instead: October (moderate) and November (moderate).
Weather 1991–2020 averages at Mammoth Cave, KY, 4.2 miles from the park's center, 760 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in August
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Great Smoky Mountains National Park | 82° / 62° | Busy | Hot |
| Kennesaw Mountain National Battlefield Park | 84° / 68° | Very busy | Hot |
| Gateway Arch National Park | 88° / 66° | Busy | Hot |
| Chattahoochee River National Recreation Area | 88° / 69° | Very busy | Hot |
| New River Gorge National Park and Preserve | 81° / 60° | Very busy | Hot |
Closures, reservations and alerts: Mammoth Cave National Park on nps.gov
All twelve months at Mammoth Cave · National parks to visit in August