S
M
T
W
T
F
S
26
78°
60°
27
81°
59°
28
69°
51°
29
70°
56°
30
68°
51°
1
59°
45°
2
62°
45°
3
65°
51°
4
66°
52°
5
74°
53°
6
68°
57°
7
67°
54°
8
68°
49°
9
69°
50°
10
69°
51°
11
71°
59°
12
71°
60°
13
78°
59°
14
71°
53°
15
70°
51°
16
69°
51°
17
70°
52°
18
71°
56°
19
72°
59°
20
72°
55°
21
71°
53°
22
72°
54°
23
73°
62°
24
74°
62°
25
74°
60°
26
72°
59°
27
74°
62°
28
73°
63°
29
74°
64°
30
75°
63°
31
71°
61°
1
74°
62°
2
75°
61°
3
75°
61°
4
76°
62°
5
84°
62°
6
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mammoth Cave National Park
Mammoth Cave National Park's May 2026 forecast shows daily high temperatures ranging from 59° to 85°, with overnight lows between 45° and 65°. The average high for May is 72° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Mammoth Cave National Park. See also: June | July | August.
