S
M
T
W
T
F
S
30
103°
78°
31
103°
75°
1
103°
78°
2
103°
75°
3
97°
75°
4
102°
73°
5
105°
74°
6
106°
74°
7
104°
74°
8
105°
78°
9
103°
81°
10
96°
73°
11
100°
71°
12
104°
75°
13
102°
76°
14
102°
80°
15
103°
80°
16
102°
79°
17
102°
76°
18
102°
72°
19
100°
71°
20
99°
72°
21
95°
68°
22
91°
70°
23
96°
70°
24
93°
65°
25
93°
58°
26
94°
64°
27
94°
72°
28
90°
67°
29
94°
70°
30
92°
73°
1
78°
70°
2
73°
65°
3
72°
63°
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 72° to 78°, with overnight lows between 63° and 70°. The average high for September is 74° 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 McAlester. See also: October | November | December.
