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
104°
77°
9
102°
77°
10
82°
68°
11
88°
70°
12
96°
73°
13
100°
75°
14
98°
78°
15
99°
75°
16
96°
71°
17
91°
69°
18
87°
62°
19
77°
59°
20
79°
56°
21
79°
59°
22
84°
58°
23
81°
58°
24
80°
56°
25
86°
63°
26
85°
62°
27
85°
63°
28
84°
62°
29
81°
61°
30
82°
60°
1
83°
59°
2
83°
60°
3
82°
59°
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 77° to 100°, with overnight lows between 56° and 78°. The average high for September is 86° with an average low of 64°. 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.