S
M
T
W
T
F
S
30
64°
46°
31
65°
44°
1
69°
46°
2
73°
47°
3
73°
49°
4
72°
49°
5
73°
50°
6
73°
50°
7
72°
49°
8
74°
48°
9
73°
40°
10
62°
37°
11
61°
40°
12
62°
37°
13
60°
38°
14
60°
36°
15
59°
41°
16
59°
45°
17
61°
37°
18
60°
34°
19
59°
35°
20
57°
34°
21
56°
33°
22
54°
35°
23
56°
32°
24
Hist. Avg.
59°
37°
25
Hist. Avg.
59°
37°
26
Hist. Avg.
58°
37°
27
Hist. Avg.
58°
36°
28
Hist. Avg.
58°
36°
29
Hist. Avg.
57°
36°
30
Hist. Avg.
57°
35°
1
Hist. Avg.
57°
35°
2
Hist. Avg.
56°
35°
3
Hist. Avg.
56°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Okla
Okla's September 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 32° and 50°. The average high for September is 64° with an average low of 41°. 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 Okla. See also: October | November | December.
