Weather on March 21 at Mammoth Cave
Mammoth Cave National Park
Based on 56 years of data from Bowling Green, KY
Planning Your Visit
March 21st in Mammoth Cave National Park (via Bowling Green, KY) typically brings mild spring weather, with average highs around 60°F and lows near 37°F. Over 56 years of records, the warmest March 21st was in 2012 (71°F average), while the coldest was 1986 (29°F) — a 42°F range across recorded history. Precipitation has occurred on 38% of recorded March 21st dates, with snow falling 2% of the time (heaviest snowfall: 3.5"). The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Mammoth Cave? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 82°F | 54°F | 0" | 0" |
| 2025 | 61°F | 27°F | 0" | 0" |
| 2024 | 60°F | 36°F | 0" | 0" |
| 2023 | 58°F | 27°F | 0.36" | 0" |
| 2022 | 73°F | 35°F | 0" | -- |
| 2021 | 68°F | 33°F | 0" | 0" |
| 2020 | 52°F | 37°F | 0" | 0" |
| 2019 | 55°F | 43°F | 0.03" | 0" |
| 2018 | 47°F | 33°F | 0.05" | 0" |
| 2017 | 74°F | 53°F | 0" | 0" |
| 2016 | 56°F | 33°F | 0" | 0" |
| 2015 | 65°F | 36°F | 0" | 0" |
| 2014 | 69°F | 31°F | 0" | 0" |
| 2013 | 40°F | 20°F | 0" | 0" |
| 2012 | 83°F | 60°F | 0" | 0" |
| 2011 | 80°F | 57°F | 0" | 0" |
| 2010 | 60°F | 40°F | 2.67" | 0" |
| 2009 | 57°F | 32°F | 0" | 0" |
| 2008 | 70°F | 34°F | 0" | 0" |
| 2007 | 78°F | 46°F | 0" | 0" |
| 2006 | 40°F | 32°F | 0.56" | 0" |
| 2005 | 60°F | 34°F | 0" | 0" |
| 2004 | 51°F | 32°F | 0" | 0" |
| 2003 | 57°F | 46°F | 0" | 0" |
| 2002 | 53°F | 24°F | 0" | 0" |
| 2001 | 60°F | 40°F | 0.05" | 0" |
| 2000 | 54°F | 39°F | 0" | 0" |
| 1999 | 58°F | 38°F | 0" | 0" |
| 1998 | 40°F | 35°F | -- | 0" |
| 1997 | 74°F | 39°F | -- | 0" |
| 1996 | 33°F | 26°F | 0.51" | 3.5" |
| 1995 | 70°F | 43°F | 0" | 0" |
| 1994 | 68°F | 37°F | 0.05" | 0" |
| 1993 | 56°F | 41°F | 0.05" | 0" |
| 1992 | 56°F | 30°F | 0" | 0" |
| 1991 | 76°F | 57°F | 0.86" | 0" |
| 1990 | 60°F | 25°F | 0" | 0" |
| 1989 | 43°F | 30°F | 0.56" | 0" |
| 1988 | 59°F | 36°F | 0" | 0" |
| 1987 | 64°F | 34°F | 0" | 0" |
| 1986 | 37°F | 21°F | 0" | 0" |
| 1985 | 54°F | 47°F | 0.81" | 0" |
| 1984 | 40°F | 32°F | 0.43" | 0" |
| 1983 | 36°F | 31°F | 0.03" | 0" |
| 1982 | 69°F | 40°F | 0.1" | 0" |
| 1981 | 55°F | 33°F | 0.05" | 0" |
| 1980 | 60°F | 35°F | 0.23" | 0" |
| 1979 | 75°F | 56°F | 0" | 0" |
| 1978 | 58°F | 39°F | 1.27" | 0" |
| 1977 | 69°F | 37°F | 0.53" | 0" |
| 1976 | 61°F | 39°F | 0" | 0" |
| 1975 | 75°F | 41°F | 0" | 0" |
| 1974 | 51°F | 30°F | 0.08" | 0" |
| 1973 | 51°F | 34°F | 0" | 0" |
| 1972 | 67°F | 50°F | 0.43" | 0" |
| 1971 | 66°F | 25°F | 0" | 0" |