S
M
T
W
T
F
S
27
80°
48°
28
74°
49°
29
67°
48°
30
68°
47°
1
67°
52°
2
66°
49°
3
67°
46°
4
69°
47°
5
71°
49°
6
73°
50°
7
73°
43°
8
66°
43°
9
64°
44°
10
64°
42°
11
63°
40°
12
64°
38°
13
59°
41°
14
61°
50°
15
64°
50°
16
63°
49°
17
61°
51°
18
68°
46°
19
71°
39°
20
60°
42°
21
60°
39°
22
62°
47°
23
61°
48°
24
68°
44°
25
64°
43°
26
Hist. Avg.
62°
42°
27
Hist. Avg.
62°
41°
28
Hist. Avg.
61°
41°
29
Hist. Avg.
61°
41°
30
Hist. Avg.
60°
40°
31
Hist. Avg.
60°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Hannibal
Hannibal's October 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 38° and 52°. The average high for October is 66° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Hannibal. See also: November | December | January.