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Mammoth Cave National Park May Weather

Averages and records for weather in Mammoth Cave National Park, Kentucky in the month of May.

Typical Mammoth Cave National Park May Weather 1991–2020
Average daily high	80.1 °F
Average daily low	55.9 °F
Average monthly precipitation	5.2 inches
Daily chance of precipitation	39.0%

Mammoth Cave National Park May Weather Records 1934–2024
Highest temperature	96 °F	May 17, 1991
Lowest temperature	27 °F	May 1, 1963
Highest daily low	78 °F	May 18, 1991
Lowest daily high	45 °F	May 2, 1940
Hottest average high temperature	87.0 °F	2018
Coldest average high temperature	73.3 °F	1945
Most daily precipitation	6.8 inches	May 7, 1984
Most monthly precipitation	14.1 inches	1995

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	76.1	51.2	90	27
May 2	76.3	51.5	91	31
May 3	76.5	51.8	90	32
May 4	76.7	52.0	89	28
May 5	77.0	52.3	92	30
May 6	77.2	52.6	90	30
May 7	77.4	52.8	90	29
May 8	77.7	53.1	91	31
May 9	78.1	53.4	90	29
May 10	78.4	53.7	92	29
May 11	78.7	54.1	91	31
May 12	79.1	54.5	92	32
May 13	79.4	54.9	90	32
May 14	79.7	55.3	92	35
May 15	79.9	55.6	94	37
May 16	80.2	55.9	90	30
May 17	80.5	56.2	96	30
May 18	80.8	56.5	92	30
May 19	81.0	56.7	91	34
May 20	81.2	57.0	91	38
May 21	81.5	57.2	93	32
May 22	81.6	57.4	94	34
May 23	81.7	57.5	93	36
May 24	81.9	57.7	94	38
May 25	82.0	57.9	94	38
May 26	82.2	58.1	93	36
May 27	82.4	58.3	94	32
May 28	82.8	58.7	95	39
May 29	83.1	59.1	94	41
May 30	83.4	59.5	95	33
May 31	83.7	59.7	95	37

Weather Station Details

Years	Station	Coordinates
1934–2024	Mammoth Cave	location