S
M
T
W
T
F
S
26
67°
47°
27
56°
44°
28
57°
40°
29
52°
38°
30
44°
32°
1
50°
27°
2
61°
29°
3
69°
46°
4
63°
38°
5
46°
34°
6
43°
30°
7
54°
33°
8
65°
29°
9
58°
32°
10
51°
29°
11
55°
41°
12
60°
39°
13
56°
37°
14
61°
47°
15
71°
50°
16
69°
46°
17
67°
45°
18
69°
46°
19
69°
48°
20
71°
48°
21
70°
49°
22
69°
45°
23
68°
48°
24
72°
52°
25
72°
53°
26
75°
54°
27
74°
54°
28
74°
52°
29
72°
51°
30
65°
47°
31
65°
44°
1
66°
48°
2
65°
52°
3
67°
54°
4
67°
53°
5
73°
53°
6
69°
49°
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 51° to 75°, with overnight lows between 29° and 54°. The average high for May is 67° with an average low of 47°. 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.
