S
M
T
W
T
F
S
30
82°
71°
31
90°
72°
1
91°
73°
2
93°
70°
3
94°
74°
4
92°
73°
5
90°
71°
6
79°
68°
7
N/A
8
92°
70°
9
81°
61°
10
79°
58°
11
84°
62°
12
81°
58°
13
79°
59°
14
77°
53°
15
73°
50°
16
74°
52°
17
69°
51°
18
68°
49°
19
72°
48°
20
71°
49°
21
73°
48°
22
76°
53°
23
77°
54°
24
76°
54°
25
76°
53°
26
75°
54°
27
77°
54°
28
76°
53°
29
74°
54°
30
73°
51°
1
72°
45°
2
62°
42°
3
62°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Montezuma
Montezuma's September 2026 forecast shows daily high temperatures ranging from 62° to 92°, with overnight lows between 38° and 70°. The average high for September is 75° with an average low of 53°. 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.