S
M
T
W
T
F
S
30
87°
62°
31
88°
68°
1
87°
63°
2
86°
60°
3
85°
58°
4
83°
59°
5
84°
60°
6
85°
65°
7
88°
67°
8
91°
67°
9
91°
65°
10
84°
59°
11
88°
65°
12
88°
65°
13
89°
57°
14
83°
56°
15
82°
58°
16
86°
56°
17
85°
56°
18
86°
58°
19
88°
58°
20
88°
60°
21
87°
62°
22
87°
62°
23
82°
61°
24
82°
61°
25
80°
60°
26
86°
60°
27
86°
59°
28
85°
59°
29
86°
58°
30
86°
59°
1
85°
58°
2
86°
50°
3
85°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poteau
Poteau's September 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 49° and 68°. The average high for September is 86° with an average low of 60°. 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 Poteau. See also: October | November | December.
