December is a good month at Mammoth Cave — it ranks 5th of the twelve here. Expect about 71% fewer visitors than July, the park's peak — 28,745 visits on average. Days run around 51°F by afternoon and 33°F at night, with 9.6 hours of daylight.
December against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| December (this page) | Good | 28,745 | −71% | 51°F | 33°F | 1.3" | 9.6 h |
| February (best) | Excellent | 20,503 | −79% | 53°F | 32°F | 1.4" | 10.8 h |
| July (peak crowds) | Tough | 99,349 | peak | 91°F | 68°F | 0" | 14.5 h |
Weather figures are for the visitor center area — the Mammoth Cave station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is December a good time to visit Mammoth Cave?
Yes — a solid month, if not the very best. December ranks 5 of 12 at Mammoth Cave on crowds, weather, daylight, and access together.
How crowded is Mammoth Cave in December?
About 28,745 recreation visits on average — 71% below July, the park's peak.
How warm is Mammoth Cave in December?
Average highs around 51°F and lows around 33°F at the Mammoth Cave station, with about 1 inches of snow across the month.
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