S
M
T
W
T
F
S
30
91°
70°
31
88°
66°
1
88°
65°
2
89°
65°
3
89°
69°
4
91°
67°
5
93°
63°
6
85°
63°
7
86°
65°
8
91°
68°
9
92°
62°
10
85°
62°
11
88°
63°
12
87°
61°
13
84°
60°
14
83°
59°
15
84°
60°
16
83°
59°
17
87°
60°
18
88°
62°
19
Hist. Avg.
85°
59°
20
Hist. Avg.
85°
59°
21
Hist. Avg.
84°
58°
22
Hist. Avg.
84°
58°
23
Hist. Avg.
84°
58°
24
Hist. Avg.
83°
57°
25
Hist. Avg.
83°
57°
26
Hist. Avg.
82°
56°
27
Hist. Avg.
82°
56°
28
Hist. Avg.
82°
56°
29
Hist. Avg.
81°
55°
30
Hist. Avg.
81°
55°
1
Hist. Avg.
81°
54°
2
Hist. Avg.
80°
54°
3
Hist. Avg.
80°
54°
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 83° to 93°, with overnight lows between 59° and 70°. The average high for September is 88° with an average low of 63°. 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.