About Mammoth Cave Weather
Mammoth Cave National Park has a moderate climate, with often warm and humid conditions. Summers are very warm, and winters are cool but not usually cold. Southern Kentucky receives the highest average precipitation for the state, about 50 inches a year. Kentucky is located in a path several storm systems follow. Storms can occur all year, but most occur between March and September. Of course, within the cave the conditions are constant: cool and humid.
| Month | Avg High | Avg Low | Record High | Record Low | Avg Pcpt |
| January | 44° | 24° | 78°/1998 | -20°/1984 | 3.85" |
| February | 51° | 28° | 82°/1962 | -21°/1951 | 3.82" |
| March | 60° | 36° | 86°/1963 | -6°/1960 | 5.04" |
| April | 71° | 43° | 93°/1995 | 18°/1950 | 4.18" |
| May | 78° | 52° | 96°/1991 | 27°/1963 | 5.22" |
| June | 85° | 60° | 105°/1952 | 32°/1950 | 4.65" |
| July | 89° | 65° | 108°/1952 | 40°/1950 | 4.56" |
| August | 87° | 63° | 104°/1983 | 37°/1950 | 3.62" |
| September | 82° | 56° | 106°/1954 | 30°/1949 | 4.17" |
| October | 71° | 45° | 94°/1953 | 18°/1981 | 3.46" |
| November | 59° | 37° | 84°/2003 | -8°/1950 | 4.50" |
| December | 48° | 29° | 80°/1951 | -18°/1989 | 4.92" |
