S
M
T
W
T
F
S
27
75°
56°
28
81°
53°
29
83°
48°
30
92°
64°
1
91°
67°
2
74°
55°
3
77°
48°
4
81°
46°
5
76°
45°
6
78°
51°
7
85°
48°
8
80°
50°
9
82°
54°
10
85°
59°
11
80°
58°
12
84°
60°
13
69°
46°
14
71°
51°
15
72°
48°
16
67°
47°
17
62°
38°
18
72°
52°
19
61°
49°
20
63°
51°
21
60°
49°
22
59°
45°
23
66°
47°
24
59°
44°
25
57°
44°
26
67°
45°
27
59°
45°
28
66°
49°
29
68°
50°
30
66°
51°
31
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Bethalto
Bethalto's October 2026 forecast shows daily high temperatures ranging from 57° to 85°, with overnight lows between 38° and 60°. The average high for October is 70° with an average low of 49°. 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 Bethalto. See also: November | December | January.
