S
M
T
W
T
F
S
30
81°
63°
31
83°
67°
1
87°
60°
2
85°
61°
3
80°
60°
4
81°
61°
5
81°
68°
6
85°
67°
7
87°
66°
8
80°
66°
9
78°
65°
10
82°
65°
11
83°
64°
12
82°
65°
13
80°
62°
14
77°
58°
15
77°
58°
16
76°
57°
17
76°
57°
18
77°
62°
19
79°
62°
20
80°
63°
21
81°
59°
22
77°
55°
23
74°
61°
24
73°
62°
25
79°
56°
26
73°
59°
27
77°
60°
28
78°
59°
29
74°
59°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
71°
47°
2
Hist. Avg.
70°
47°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wynnewood
Wynnewood's September 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 55° and 68°. The average high for September is 79° with an average low of 62°. 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 Wynnewood. See also: October | November | December.