Weather on August 18 at Mammoth Cave
Mammoth Cave National Park
Based on 55 years of data from Bowling Green, KY
Planning Your Visit
August 18th in Mammoth Cave National Park (via Bowling Green, KY) typically brings warm summer weather, with average highs around 88°F and lows near 67°F. Over 55 years of records, the warmest August 18th was in 1995 (87°F average), while the coldest was 1981 (67°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 18th dates historically, with the wettest August 18th recording 8.2" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 18th in Mammoth Cave? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 95°F | 72°F | 0" | 0" |
| 2024 | 86°F | 69°F | 0.03" | 0" |
| 2023 | 83°F | 64°F | 0" | 0" |
| 2022 | 87°F | 63°F | 0" | -- |
| 2021 | 90°F | 68°F | 1.63" | 0" |
| 2020 | 86°F | 68°F | 0.08" | 0" |
| 2019 | 95°F | 71°F | 0" | 0" |
| 2018 | 88°F | 73°F | 0.08" | 0" |
| 2017 | 87°F | 71°F | 0.03" | 0" |
| 2016 | 82°F | 74°F | 1.19" | 0" |
| 2015 | 89°F | 69°F | 0" | 0" |
| 2014 | 86°F | 72°F | 0" | 0" |
| 2013 | 80°F | 65°F | 0" | 0" |
| 2012 | 83°F | 58°F | 0" | 0" |
| 2011 | 95°F | 69°F | 0.03" | 0" |
| 2010 | 77°F | 70°F | 8.2" | 0" |
| 2009 | 84°F | 72°F | 0" | 0" |
| 2008 | 90°F | 58°F | 0" | 0" |
| 2007 | 96°F | 64°F | 0" | 0" |
| 2006 | 92°F | 71°F | 0" | 0" |
| 2005 | 90°F | 72°F | 1.12" | 0" |
| 2004 | 89°F | 60°F | 0" | 0" |
| 2003 | 87°F | 69°F | 0" | 0" |
| 2002 | 90°F | 73°F | 0.48" | 0" |
| 2001 | 87°F | 67°F | 0" | 0" |
| 2000 | 83°F | 65°F | 0.05" | 0" |
| 1999 | 97°F | 70°F | 0" | 0" |
| 1998 | 90°F | 65°F | 0" | 0" |
| 1997 | 86°F | 68°F | -- | 0" |
| 1996 | 88°F | 68°F | -- | 0" |
| 1995 | 97°F | 77°F | 0.15" | 0" |
| 1994 | 91°F | 63°F | 0" | 0" |
| 1993 | 93°F | 71°F | 0" | 0" |
| 1992 | 84°F | 58°F | 0" | 0" |
| 1991 | 88°F | 69°F | 0" | 0" |
| 1990 | 94°F | 68°F | 0" | 0" |
| 1989 | 81°F | 64°F | 0" | 0" |
| 1988 | 99°F | 73°F | 0" | 0" |
| 1987 | 86°F | 64°F | 0" | 0" |
| 1986 | 87°F | 67°F | 0" | 0" |
| 1985 | 87°F | 66°F | 0" | 0" |
| 1984 | 77°F | 69°F | 0.48" | 0" |
| 1983 | 91°F | 74°F | 0" | 0" |
| 1982 | 84°F | 61°F | 0" | 0" |
| 1981 | 72°F | 63°F | 0.05" | 0" |
| 1980 | 97°F | 74°F | 0.25" | 0" |
| 1979 | 92°F | 66°F | 0" | 0" |
| 1978 | 93°F | 68°F | 0" | 0" |
| 1977 | 80°F | 61°F | 0" | 0" |
| 1976 | 85°F | 54°F | 0" | 0" |
| 1975 | 91°F | 71°F | 0" | 0" |
| 1974 | 86°F | 68°F | 0.18" | 0" |
| 1973 | 86°F | 65°F | 0" | 0" |
| 1972 | 95°F | 68°F | 0" | 0" |
| 1971 | 83°F | 66°F | 0" | 0" |