S
M
T
W
T
F
S
1
65°
58°
2
71°
65°
3
71°
58°
4
64°
49°
5
61°
47°
6
59°
47°
7
62°
44°
8
58°
44°
9
56°
40°
10
57°
43°
11
60°
43°
12
61°
45°
13
56°
36°
14
54°
42°
15
58°
38°
16
56°
42°
17
62°
44°
18
62°
43°
19
60°
42°
20
58°
34°
21
45°
30°
22
46°
30°
23
44°
27°
24
45°
35°
25
51°
33°
26
45°
32°
27
46°
38°
28
48°
39°
29
56°
38°
30
55°
38°
1
54°
30°
2
40°
28°
3
44°
32°
4
54°
34°
5
51°
35°
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 40° to 71°, with overnight lows between 27° and 65°. The average high for November is 55° with an average low of 40°. 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.
