S
M
T
W
T
F
S
26
101°
81°
27
101°
81°
28
100°
78°
29
101°
81°
30
99°
78°
31
103°
78°
1
92°
70°
2
93°
67°
3
96°
69°
4
100°
73°
5
101°
81°
6
101°
81°
7
98°
77°
8
102°
71°
9
101°
76°
10
101°
82°
11
102°
82°
12
103°
84°
13
105°
83°
14
104°
83°
15
103°
78°
16
106°
85°
17
88°
73°
18
105°
70°
19
104°
84°
20
104°
76°
21
102°
76°
22
92°
75°
23
96°
70°
24
89°
75°
25
97°
73°
26
94°
73°
27
94°
68°
28
92°
70°
29
97°
76°
30
100°
76°
31
97°
72°
1
98°
70°
2
91°
69°
3
91°
69°
4
92°
71°
5
93°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Broken Arrow
Broken Arrow's August 2026 forecast shows daily high temperatures ranging from 91° to 100°, with overnight lows between 66° and 76°. The average high for August is 95° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Broken Arrow. See also: September | October | November.