S
M
T
W
T
F
S
30
90°
65°
31
93°
68°
1
93°
70°
2
94°
69°
3
94°
69°
4
93°
71°
5
93°
70°
6
92°
69°
7
93°
66°
8
86°
69°
9
85°
68°
10
89°
69°
11
91°
68°
12
91°
69°
13
92°
68°
14
91°
65°
15
89°
61°
16
82°
59°
17
81°
59°
18
82°
61°
19
84°
59°
20
80°
59°
21
80°
60°
22
81°
61°
23
82°
64°
24
85°
64°
25
86°
64°
26
87°
64°
27
86°
62°
28
85°
60°
29
84°
59°
30
84°
59°
1
83°
58°
2
85°
62°
3
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in McAlester
McAlester's September 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 53° and 71°. The average high for September is 87° 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 McAlester. See also: October | November | December.
