Weather on December 18 at Mammoth Cave
Mammoth Cave National Park
KYSoutheast800 ft elevation
Avg High47°F
Avg Low28°F
Warmest200258°F
Coldest198517°F
Based on 55 years of data from Bowling Green, KY
Planning Your Visit
December 18th in Mammoth Cave National Park (via Bowling Green, KY) typically brings chilly winter weather, with average highs around 47°F and lows near 28°F. Over 55 years of records, the warmest December 18th was in 2002 (58°F average), while the coldest was 1985 (17°F) — a 41°F range across recorded history. Precipitation has occurred on 29% of recorded December 18th dates, with snow falling 2% of the time. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Mammoth Cave? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 61°F | 40°F | 3.02" | 0" |
| 2024 | 61°F | 40°F | 3.05" | 0" |
| 2023 | 43°F | 30°F | 0" | 0" |
| 2022 | 41°F | 25°F | 0" | 0" |
| 2021 | 67°F | 41°F | 0.2" | 0" |
| 2020 | 45°F | 22°F | 0" | 0" |
| 2019 | 31°F | 22°F | 0" | 0" |
| 2018 | 51°F | 27°F | 0" | 0" |
| 2017 | 51°F | 44°F | 0" | 0" |
| 2016 | 36°F | 20°F | 1.02" | 0" |
| 2015 | 42°F | 31°F | 0" | 0" |
| 2014 | 36°F | 30°F | 0.05" | 0" |
| 2013 | 48°F | 23°F | 0" | 0" |
| 2012 | 56°F | 42°F | 0" | 0" |
| 2011 | 54°F | 24°F | 0" | 0" |
| 2010 | 38°F | 24°F | 0" | 0" |
| 2009 | 46°F | 38°F | 0.18" | 0" |
| 2008 | 47°F | 34°F | 0.13" | 0" |
| 2007 | 50°F | 24°F | 0" | 0" |
| 2006 | 63°F | 45°F | 0" | 0" |
| 2005 | 48°F | 26°F | 0" | 0" |
| 2004 | 54°F | 22°F | 0" | 0" |
| 2003 | 41°F | 32°F | 0.28" | 0" |
| 2002 | 65°F | 52°F | 0" | 0" |
| 2001 | 51°F | 32°F | 0" | 0" |
| 2000 | 33°F | 9°F | 0.08" | 0.5" |
| 1999 | 54°F | 33°F | 0" | 0" |
| 1998 | 51°F | 27°F | 0" | 0" |
| 1997 | 55°F | 22°F | -- | 0" |
| 1996 | 31°F | 20°F | -- | 0" |
| 1995 | 59°F | 44°F | 1.04" | 0" |
| 1994 | 40°F | 33°F | 0" | 0" |
| 1993 | 52°F | 38°F | 0" | 0" |
| 1992 | 47°F | 35°F | 0" | 0" |
| 1991 | 37°F | 19°F | 0" | 0" |
| 1990 | 66°F | 40°F | 4.55" | 0" |
| 1989 | 29°F | 10°F | 0" | 0" |
| 1988 | 42°F | 18°F | 0" | 0" |
| 1987 | 41°F | 17°F | 0.03" | 0" |
| 1986 | 47°F | 33°F | 0" | 0" |
| 1985 | 24°F | 10°F | 0" | 0" |
| 1984 | 62°F | 45°F | 2.13" | 0" |
| 1983 | 37°F | 20°F | 0" | 0" |
| 1982 | 50°F | 26°F | 0" | 0" |
| 1981 | 22°F | 14°F | 0.05" | 0" |
| 1980 | 57°F | 32°F | 0.05" | 0" |
| 1979 | 40°F | 16°F | 0" | 0" |
| 1978 | 46°F | 25°F | 0" | 0" |
| 1977 | 54°F | 35°F | 0" | 0" |
| 1976 | 64°F | 27°F | 0" | 0" |
| 1975 | 35°F | 12°F | 0" | 0" |
| 1974 | 47°F | 17°F | 0.08" | 0" |
| 1973 | 37°F | 21°F | 0" | 0" |
| 1972 | 47°F | 14°F | 0" | 0" |
| 1971 | 37°F | 16°F | 0" | 0" |
December 18 at Nearby Parks
Holiday Weather at Mammoth Cave
Official NPS WebsiteVisit nps.gov/maca for park information, alerts, and reservations
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