S
M
T
W
T
F
S
30
83°
62°
31
84°
62°
1
86°
65°
2
88°
66°
3
88°
66°
4
87°
65°
5
87°
66°
6
86°
65°
7
82°
63°
8
87°
65°
9
86°
63°
10
87°
60°
11
84°
64°
12
85°
63°
13
85°
64°
14
84°
62°
15
85°
63°
16
85°
62°
17
82°
63°
18
Hist. Avg.
82°
59°
19
Hist. Avg.
81°
59°
20
Hist. Avg.
81°
58°
21
Hist. Avg.
81°
58°
22
Hist. Avg.
81°
57°
23
Hist. Avg.
80°
57°
24
Hist. Avg.
80°
57°
25
Hist. Avg.
80°
56°
26
Hist. Avg.
79°
56°
27
Hist. Avg.
79°
56°
28
Hist. Avg.
79°
55°
29
Hist. Avg.
79°
55°
30
Hist. Avg.
78°
54°
1
Hist. Avg.
78°
54°
2
Hist. Avg.
78°
54°
3
Hist. Avg.
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Red Oak
Red Oak's September 2026 forecast shows daily high temperatures ranging from 82° to 88°, with overnight lows between 60° and 66°. The average high for September is 85° with an average low of 64°. 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 Red Oak. See also: October | November | December.