S
M
T
W
T
F
S
29
52°
26°
30
67°
36°
31
67°
52°
1
53°
35°
2
43°
34°
3
77°
40°
4
64°
38°
5
63°
34°
6
41°
31°
7
33°
19°
8
49°
15°
9
67°
38°
10
71°
39°
11
46°
28°
12
61°
28°
13
69°
52°
14
78°
46°
15
72°
45°
16
75°
57°
17
59°
45°
18
78°
44°
19
45°
33°
20
39°
27°
21
49°
24°
22
68°
41°
23
56°
40°
24
53°
41°
25
49°
42°
26
54°
39°
27
62°
47°
28
55°
45°
29
54°
42°
30
55°
43°
1
51°
41°
2
50°
39°
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 49° to 68°, with overnight lows between 39° and 47°. The average high for April is 55° with an average low of 42°. 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.
