Earliest and Latest Days of 90° F in Mammoth Cave National Park

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Mammoth Cave National Park, Kentucky history. It is based on NOAA data from the years 1934–2024.

Also see:

Earliest 90 degree day in Mammoth Cave National Park?

The earliest in the year that Mammoth Cave National Park, Kentucky had a high temperature of at least 90 °F is April 13 which happened in 1998.

Latest 90 degree day in Mammoth Cave National Park?

The latest in the year that Mammoth Cave National Park, Kentucky had a high temperature of at least 90 °F is November 1 which happened in 2000.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 13	1998	90 °F
April 23	1960	90 °F
April 26	1938	90 °F
April 27	1989	90 °F
April 28	1989	90 °F
April 29	2017	90 °F
April 30	2017	90 °F
April 30	1942	91 °F
May 1	1951	90 °F
May 2	1952	91 °F
May 3	2012	90 °F
May 5	1959	90 °F
May 5	1952	92 °F
May 6	1949	90 °F
May 7	2012	90 °F
May 7	2004	90 °F
May 7	1949	90 °F
May 8	2004	91 °F
May 8	1952	90 °F
May 9	2004	90 °F
May 9	1936	90 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
November 1	2000	93 °F
October 19	2005	90 °F
October 9	2018	90 °F
October 9	1939	93 °F
October 8	2018	93 °F
October 8	2011	95 °F
October 8	1939	90 °F
October 7	2018	93 °F
October 7	1941	91 °F
October 6	2019	91 °F
October 6	2018	90 °F
October 6	1941	92 °F
October 5	2018	93 °F
October 5	1959	90 °F
October 5	1954	91 °F
October 4	2019	98 °F
October 4	2018	91 °F
October 4	1959	92 °F
October 4	1954	90 °F
October 3	2019	99 °F
October 3	2014	91 °F