Weather on September 15 at Mammoth Cave
Mammoth Cave National Park
Based on 55 years of data from Bowling Green, KY
Planning Your Visit
September 15th in Mammoth Cave National Park (via Bowling Green, KY) typically brings warm fall weather, with average highs around 82°F and lows near 58°F. Over 55 years of records, the warmest September 15th was in 1991 (82°F average), while the coldest was 1974 (59°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 18% of September 15th dates historically, with the wettest September 15th recording 6.58" of rain. The last decade has been 6.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.4°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Mammoth Cave? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 94°F | 64°F | 0" | 0" |
| 2024 | 89°F | 65°F | 0" | 0" |
| 2023 | 83°F | 53°F | 0" | 0" |
| 2022 | 84°F | 56°F | 0" | -- |
| 2021 | 77°F | 67°F | 6.58" | 0" |
| 2020 | 81°F | 61°F | 0" | 0" |
| 2019 | 95°F | 62°F | 0" | 0" |
| 2018 | 91°F | 70°F | 0" | 0" |
| 2017 | 85°F | 60°F | 0" | 0" |
| 2016 | 92°F | 68°F | 0" | 0" |
| 2015 | 83°F | 48°F | 0" | 0" |
| 2014 | 75°F | 51°F | 0" | 0" |
| 2013 | 81°F | 50°F | 0" | 0" |
| 2012 | 77°F | 61°F | 0" | 0" |
| 2011 | 69°F | 51°F | 0.61" | 0" |
| 2010 | 92°F | 59°F | 0" | 0" |
| 2009 | 79°F | 70°F | 0.46" | 0" |
| 2008 | 75°F | 58°F | 0" | 0" |
| 2007 | 70°F | 49°F | 0" | 0" |
| 2006 | 80°F | 55°F | 0" | 0" |
| 2005 | 83°F | 64°F | 0.05" | 0" |
| 2004 | 87°F | 61°F | 0" | 0" |
| 2003 | 77°F | 52°F | 0" | 0" |
| 2002 | 86°F | 69°F | 3" | 0" |
| 2001 | 75°F | 49°F | 0" | 0" |
| 2000 | 72°F | 47°F | 0" | 0" |
| 1999 | 83°F | 48°F | 0" | 0" |
| 1998 | 88°F | 67°F | 0" | 0" |
| 1997 | 84°F | 61°F | -- | 0" |
| 1996 | 73°F | 47°F | -- | 0" |
| 1995 | 87°F | 65°F | 0" | 0" |
| 1994 | 90°F | 60°F | 0" | 0" |
| 1993 | 73°F | 56°F | 1.27" | 0" |
| 1992 | 88°F | 55°F | 0" | 0" |
| 1991 | 97°F | 68°F | 0" | 0" |
| 1990 | 82°F | 58°F | 0" | 0" |
| 1989 | 71°F | 61°F | 0.53" | 0" |
| 1988 | 82°F | 55°F | 0" | 0" |
| 1987 | 85°F | 61°F | 0" | 0" |
| 1986 | 83°F | 59°F | 0" | 0" |
| 1985 | 74°F | 50°F | 0" | 0" |
| 1984 | 69°F | 50°F | 0" | 0" |
| 1983 | 81°F | 47°F | 0" | 0" |
| 1982 | 82°F | 64°F | 0" | 0" |
| 1981 | 72°F | 64°F | 3.38" | 0" |
| 1980 | 80°F | 59°F | 0" | 0" |
| 1979 | 71°F | 52°F | 0" | 0" |
| 1978 | 90°F | 68°F | 0" | 0" |
| 1977 | 87°F | 68°F | 0.64" | 0" |
| 1976 | 85°F | 57°F | 0" | 0" |
| 1975 | 74°F | 53°F | 0" | 0" |
| 1974 | 74°F | 45°F | 0" | 0" |
| 1973 | 83°F | 60°F | 0" | 0" |
| 1972 | 86°F | 64°F | 0.25" | 0" |
| 1971 | 89°F | 62°F | 0" | 0" |