S
M
T
W
T
F
S
26
79°
52°
27
77°
55°
28
61°
50°
29
61°
43°
30
64°
37°
1
61°
37°
2
61°
43°
3
73°
39°
4
81°
54°
5
61°
46°
6
59°
41°
7
68°
39°
8
64°
52°
9
81°
50°
10
68°
46°
11
77°
45°
12
81°
54°
13
73°
50°
14
75°
55°
15
84°
65°
16
82°
66°
17
89°
68°
18
84°
63°
19
77°
53°
20
68°
50°
21
72°
52°
22
75°
54°
23
73°
54°
24
78°
59°
25
79°
60°
26
80°
61°
27
78°
58°
28
77°
62°
29
80°
59°
30
72°
59°
31
73°
58°
1
72°
55°
2
73°
56°
3
73°
62°
4
79°
65°
5
82°
66°
6
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hannibal
Hannibal's May 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 50° and 68°. 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 Hannibal. See also: June | July | August.
