Mammoth Cave National Park in May
In May, Mammoth Cave National Park averages a high of 81°F and a low of 57°F, with 5.2 inches of precipitation (rain plus melted snow). About 67,000 people visit, the 5th busiest of 12 (busy). Days are 14 hours 08 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 81° / 57°F
- Precipitation
- 5.2in
- Snow
- 0in
- Daylight
- 14h 8m
- Visitors
- 67,000
- 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 May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Great Smoky Mountains National Park | 75° / 51° | Busy | Mild, wet |
| Kennesaw Mountain National Battlefield Park | 77° / 57° | Busy | Mild |
| Gateway Arch National Park | 77° / 57° | Moderate | Mild, wet |
| Chattahoochee River National Recreation Area | 80° / 59° | Very busy | Hot |
| New River Gorge National Park and Preserve | 72° / 50° | Busy | Mild, wet |
Closures, reservations and alerts: Mammoth Cave National Park on nps.gov
All twelve months at Mammoth Cave · National parks to visit in May