S
M
T
W
T
F
S
30
100°
76°
31
100°
75°
1
98°
70°
2
91°
69°
3
91°
69°
4
92°
71°
5
93°
66°
6
91°
70°
7
90°
69°
8
89°
69°
9
91°
68°
10
91°
69°
11
90°
69°
12
91°
68°
13
89°
67°
14
88°
67°
15
89°
68°
16
89°
68°
17
88°
66°
18
89°
65°
19
83°
66°
20
86°
65°
21
82°
63°
22
85°
64°
23
86°
64°
24
81°
63°
25
82°
61°
26
74°
60°
27
74°
62°
28
75°
62°
29
77°
61°
30
78°
61°
1
83°
60°
2
77°
61°
3
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Broken Arrow
Broken Arrow's September 2026 forecast shows daily high temperatures ranging from 74° to 100°, with overnight lows between 60° and 76°. The average high for September is 87° 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 Broken Arrow. See also: October | November | December.
