S
M
T
W
T
F
S
26
82°
62°
27
83°
65°
28
79°
58°
29
81°
62°
30
78°
58°
1
70°
50°
2
67°
48°
3
71°
55°
4
74°
54°
5
82°
61°
6
74°
60°
7
78°
59°
8
74°
56°
9
74°
57°
10
75°
55°
11
79°
61°
12
76°
61°
13
80°
60°
14
75°
57°
15
74°
54°
16
74°
53°
17
75°
53°
18
75°
56°
19
79°
62°
20
78°
60°
21
77°
56°
22
77°
61°
23
78°
63°
24
78°
63°
25
79°
62°
26
78°
61°
27
78°
64°
28
77°
64°
29
78°
63°
30
78°
62°
31
79°
60°
1
78°
60°
2
78°
61°
3
79°
61°
4
80°
64°
5
84°
63°
6
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cullman
Cullman's May 2026 forecast shows daily high temperatures ranging from 67° to 88°, with overnight lows between 48° and 65°. The average high for May is 77° with an average low of 59°. 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 Cullman. See also: June | July | August.