S
M
T
W
T
F
S
30
95°
74°
31
95°
74°
1
94°
73°
2
93°
73°
3
93°
72°
4
92°
72°
5
93°
73°
6
92°
72°
7
92°
72°
8
91°
71°
9
92°
72°
10
92°
72°
11
91°
71°
12
92°
72°
13
90°
71°
14
89°
68°
15
86°
69°
16
91°
68°
17
90°
66°
18
90°
59°
19
79°
56°
20
81°
57°
21
82°
62°
22
85°
64°
23
86°
64°
24
87°
63°
25
86°
63°
26
85°
62°
27
84°
54°
28
83°
52°
29
76°
54°
30
79°
59°
1
83°
61°
2
84°
62°
3
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oklahoma City Southeast
Oklahoma City Southeast's September 2026 forecast shows daily high temperatures ranging from 76° to 95°, with overnight lows between 52° and 74°. 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 Oklahoma City Southeast. See also: October | November | December.
