S
M
T
W
T
F
S
30
92°
63°
31
93°
67°
1
93°
68°
2
92°
65°
3
94°
66°
4
94°
68°
5
93°
68°
6
92°
67°
7
92°
64°
8
86°
66°
9
85°
67°
10
90°
66°
11
91°
65°
12
91°
66°
13
92°
66°
14
90°
64°
15
89°
63°
16
83°
57°
17
82°
57°
18
82°
61°
19
87°
56°
20
81°
56°
21
80°
59°
22
80°
59°
23
82°
61°
24
86°
61°
25
86°
60°
26
87°
61°
27
86°
58°
28
85°
57°
29
84°
56°
30
83°
56°
1
84°
55°
2
85°
59°
3
77°
50°
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 77° to 94°, with overnight lows between 50° and 68°. The average high for September is 87° with an average low of 62°. 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.
