S
M
T
W
T
F
S
30
102°
70°
31
102°
73°
1
102°
73°
2
100°
75°
3
99°
73°
4
100°
72°
5
102°
72°
6
104°
73°
7
102°
72°
8
103°
77°
9
102°
72°
10
85°
69°
11
95°
76°
12
93°
75°
13
98°
72°
14
97°
69°
15
85°
64°
16
86°
63°
17
88°
59°
18
82°
57°
19
80°
56°
20
79°
56°
21
81°
58°
22
86°
65°
23
87°
64°
24
86°
64°
25
83°
63°
26
82°
62°
27
83°
62°
28
84°
61°
29
81°
62°
30
79°
56°
1
72°
49°
2
71°
48°
3
71°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chouteau
Chouteau's September 2026 forecast shows daily high temperatures ranging from 71° to 103°, with overnight lows between 47° and 77°. The average high for September is 85° with an average low of 63°. 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 Chouteau. See also: October | November | December.