S
M
T
W
T
F
S
27
75°
58°
28
82°
55°
29
86°
50°
30
95°
64°
1
93°
71°
2
74°
56°
3
78°
50°
4
83°
48°
5
79°
50°
6
80°
45°
7
89°
48°
8
87°
49°
9
90°
54°
10
83°
59°
11
84°
58°
12
93°
63°
13
90°
60°
14
80°
64°
15
71°
52°
16
67°
47°
17
64°
44°
18
65°
45°
19
67°
46°
20
69°
48°
21
70°
45°
22
63°
45°
23
62°
39°
24
64°
42°
25
67°
46°
26
72°
44°
27
68°
42°
28
61°
37°
29
59°
42°
30
64°
44°
31
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in O'Fallon Township
O'Fallon Township's October 2026 forecast shows daily high temperatures ranging from 59° to 93°, with overnight lows between 37° and 64°. The average high for October is 72° with an average low of 48°. 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 O'Fallon Township. See also: November | December | January.
