Mammoth Cave National Park Weather Records

Mammoth Cave National Park, Kentucky weather averages and records from 1934–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Mammoth Cave National Park, Kentucky was 108 °F which occurred on June 30, 2012.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Mammoth Cave National Park, Kentucky was -21 °F which occurred on February 2, 1951.
Lowest Temperatures: All-Time By Year
Mammoth Cave National Park Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 47.0 27.9 80 -20 3.8
February 52.4 31.6 82 -21 4.4
March 61.1 37.9 86 -6 5.3
April 72.9 47.0 91 18 5.0
May 80.1 55.9 96 27 5.2
June 87.1 63.2 108 32 5.0
July 90.1 67.2 108 40 4.9
August 88.9 65.3 105 37 3.9
September 83.8 58.9 106 29 3.9
October 73.0 48.0 99 18 3.7
November 59.9 38.9 93 -8 4.1
December 49.6 31.6 80 -18 4.7
Entire year 70.9 48.1 108 -21 54.0
More Mammoth Cave National Park Weather Records
1934–2024
Highest daily low 81 °F August 16, 1988
Lowest daily high 5 °F January 23, 1936
Greatest daily range
(Difference of high and low)
57 °F October 18, 1948
Greatest difference in daily high
over two conscutive days
47 °F Feb 9–10, 1994
Most daily precipitation 6.8 inches May 7, 1984
Most monthly precipitation 21.0 inches January 1937
Most yearly precipitation 71.9 inches 1950
Most yearly days with precipitation 147 2020
Earliest freeze September 25 1965
Earliest day ≥ 90 °F April 13 1998
Earliest day ≥ 100 °F June 15 1996
Latest freeze May 18 1997
Latest day ≥ 90 °F November 1 2000
Latest day ≥ 100 °F September 12 1936
Most days in a year < 0 °F 10 1977
Most days in a year < 32 °F 119 1947
Most days in a year ≥ 80 °F 173 2016
Most days in a year ≥ 90 °F 99 2019
Most days in a year ≥ 100 °F 24 1936
Mammoth Cave National Park Weather Streaks
Most consecutive days...
With precipitation 13 days Jun 8–20, 1940
Without precipitation 36 days Feb 3 – Mar 9, 1968
High temperature at or
below freezing
13 days Jan 18–30, 1940
High temperature ≥ 80 °F 127 days May 23 – Sep 26, 2016
High temperature ≥ 90 °F 28 days Jul 9 – Aug 5, 2011
High temperature ≥ 100 °F 12 days Jun 28 – Jul 9, 2012
Plant Hardiness Zone
7A
Mammoth Cave National Park is in plant hardiness zone 7A
based on average yearly minimum temperature from 1991–2020
Mammoth Cave National Park Weather by Year
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Weather Station Details
Years Station Coordinates
1934–2024 Mammoth Cave location