S
M
T
W
T
F
S
1
64°
55°
2
68°
64°
3
72°
57°
4
67°
50°
5
68°
47°
6
65°
45°
7
67°
44°
8
61°
44°
9
62°
43°
10
59°
43°
11
63°
42°
12
64°
43°
13
58°
37°
14
56°
43°
15
60°
39°
16
57°
43°
17
64°
46°
18
64°
44°
19
62°
43°
20
60°
36°
21
47°
32°
22
47°
30°
23
46°
27°
24
46°
36°
25
52°
34°
26
46°
32°
27
48°
38°
28
50°
41°
29
57°
40°
30
57°
40°
1
55°
33°
2
42°
30°
3
45°
32°
4
53°
35°
5
53°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
November Weather in O'Fallon
O'Fallon's November 2026 forecast shows daily high temperatures ranging from 42° to 72°, with overnight lows between 27° and 64°. The average high for November is 57° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how November weather will actually feel in O'Fallon. See also: December | January | February.
