S
M
T
W
T
F
S
29
68°
45°
30
86°
61°
31
81°
57°
1
57°
45°
2
79°
50°
3
81°
48°
4
72°
43°
5
59°
37°
6
57°
43°
7
57°
45°
8
78°
55°
9
76°
55°
10
63°
48°
11
71°
59°
12
77°
62°
13
83°
65°
14
76°
48°
15
61°
41°
16
64°
47°
17
68°
52°
18
68°
52°
19
71°
54°
20
65°
44°
21
68°
53°
22
70°
50°
23
66°
48°
24
71°
44°
25
63°
51°
26
66°
52°
27
68°
51°
28
72°
51°
29
66°
46°
30
62°
49°
1
67°
50°
2
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Hannibal
Hannibal's April 2026 forecast shows daily high temperatures ranging from 57° to 83°, with overnight lows between 41° and 65°. The average high for April is 69° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Hannibal. See also: May | June | July.