S
M
T
W
T
F
S
30
70°
39°
31
71°
38°
1
70°
38°
2
68°
37°
3
64°
35°
4
69°
35°
5
63°
30°
6
62°
30°
7
62°
31°
8
63°
35°
9
61°
33°
10
60°
32°
11
61°
35°
12
67°
36°
13
68°
28°
14
61°
26°
15
58°
26°
16
57°
27°
17
58°
29°
18
63°
27°
19
63°
31°
20
59°
32°
21
65°
32°
22
65°
33°
23
66°
35°
24
66°
34°
25
65°
34°
26
64°
33°
27
65°
32°
28
62°
31°
29
60°
30°
30
54°
31°
1
56°
29°
2
58°
31°
3
58°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Montezuma
Montezuma's September 2026 forecast shows daily high temperatures ranging from 54° to 71°, with overnight lows between 20° and 39°. The average high for September is 63° with an average low of 32°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Montezuma. See also: October | November | December.
