S
M
T
W
T
F
S
30
101°
70°
31
102°
75°
1
102°
76°
2
102°
75°
3
100°
73°
4
104°
73°
5
106°
75°
6
104°
73°
7
101°
73°
8
105°
76°
9
101°
74°
10
88°
70°
11
94°
74°
12
98°
74°
13
99°
74°
14
90°
70°
15
89°
68°
16
89°
69°
17
87°
69°
18
88°
66°
19
89°
60°
20
83°
61°
21
88°
68°
22
87°
67°
23
87°
68°
24
86°
67°
25
85°
67°
26
83°
65°
27
85°
65°
28
85°
66°
29
84°
65°
30
81°
60°
1
74°
54°
2
72°
52°
3
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sallisaw
Sallisaw's September 2026 forecast shows daily high temperatures ranging from 70° to 105°, with overnight lows between 52° and 76°. The average high for September is 88° with an average low of 66°. 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 Sallisaw. See also: October | November | December.