Weather on October 20 at Mammoth Cave
Mammoth Cave National Park
Based on 55 years of data from Bowling Green, KY
Planning Your Visit
October 20th in Mammoth Cave National Park (via Bowling Green, KY) typically brings mild fall weather, with average highs around 68°F and lows near 43°F — a 25°F daily swing. Over 55 years of records, the warmest October 20th was in 1979 (74°F average), while the coldest was 1989 (40°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 25% of October 20th dates historically, with the wettest October 20th recording 2.39" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Mammoth Cave? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 71°F | 40°F | 0" | 0" |
| 2024 | 76°F | 39°F | 0" | 0" |
| 2023 | 71°F | 46°F | 0" | 0" |
| 2022 | 63°F | 30°F | 0" | -- |
| 2021 | 76°F | 44°F | 0" | 0" |
| 2020 | 79°F | 59°F | 0" | 0" |
| 2019 | 74°F | 55°F | 0" | 0" |
| 2018 | 67°F | 40°F | 0.08" | 0" |
| 2017 | 78°F | 42°F | 0" | 0" |
| 2016 | 81°F | 56°F | 0.89" | 0" |
| 2015 | 72°F | 40°F | 0" | 0" |
| 2014 | 69°F | 42°F | 0" | 0" |
| 2013 | 62°F | 34°F | 0" | 0" |
| 2012 | 60°F | 45°F | 0" | 0" |
| 2011 | 58°F | 44°F | 0.1" | 0" |
| 2010 | 73°F | 42°F | 0" | 0" |
| 2009 | 69°F | 38°F | 0" | 0" |
| 2008 | 70°F | 36°F | 0" | 0" |
| 2007 | 75°F | 48°F | 0" | 0" |
| 2006 | 51°F | 37°F | 0" | 0" |
| 2005 | 86°F | 57°F | 0" | 0" |
| 2004 | 66°F | 59°F | 0" | 0" |
| 2003 | 80°F | 44°F | 0" | 0" |
| 2002 | 61°F | 51°F | 0.1" | 0" |
| 2001 | 73°F | 41°F | 0" | 0" |
| 2000 | 80°F | 42°F | 0" | 0" |
| 1999 | 64°F | 31°F | 0" | 0" |
| 1998 | 70°F | 39°F | 0" | 0" |
| 1997 | 67°F | 42°F | -- | 0" |
| 1996 | 62°F | 31°F | -- | 0" |
| 1995 | 67°F | 47°F | 1.24" | 0" |
| 1994 | 77°F | 55°F | 0.03" | 0" |
| 1993 | 78°F | 62°F | 0.1" | 0" |
| 1992 | 59°F | 33°F | 0" | 0" |
| 1991 | 61°F | 34°F | 0" | 0" |
| 1990 | 71°F | 35°F | 0" | 0" |
| 1989 | 46°F | 34°F | 0" | 0" |
| 1988 | 56°F | 38°F | 0.2" | 0" |
| 1987 | 55°F | 42°F | 0.43" | 0" |
| 1986 | 69°F | 37°F | 0" | 0" |
| 1985 | 69°F | 63°F | 1.96" | 0" |
| 1984 | 79°F | 50°F | 2.39" | 0" |
| 1983 | 75°F | 59°F | 0.05" | 0" |
| 1982 | 63°F | 39°F | 0.66" | 0" |
| 1981 | 67°F | 34°F | 0" | 0" |
| 1980 | 68°F | 37°F | 0" | 0" |
| 1979 | 83°F | 65°F | 0" | 0" |
| 1978 | 73°F | 38°F | 0" | 0" |
| 1977 | 65°F | 36°F | 0" | 0" |
| 1976 | 49°F | 42°F | 1.63" | 0" |
| 1975 | 68°F | 38°F | 0" | 0" |
| 1974 | 52°F | 33°F | 0" | 0" |
| 1973 | 76°F | 45°F | 0" | 0" |
| 1972 | 57°F | 30°F | 0" | 0" |
| 1971 | 80°F | 52°F | 0" | 0" |