S
M
T
W
T
F
S
26
91°
71°
27
90°
70°
28
91°
71°
29
92°
71°
30
94°
73°
31
94°
72°
1
93°
74°
2
92°
76°
3
96°
77°
4
98°
74°
5
96°
72°
6
96°
70°
7
91°
70°
8
90°
71°
9
90°
70°
10
91°
70°
11
92°
71°
12
94°
70°
13
93°
73°
14
94°
71°
15
94°
72°
16
96°
73°
17
96°
69°
18
89°
68°
19
90°
72°
20
93°
75°
21
95°
74°
22
95°
74°
23
94°
73°
24
95°
74°
25
96°
74°
26
95°
73°
27
94°
74°
28
94°
74°
29
92°
73°
30
93°
74°
31
91°
71°
1
90°
70°
2
90°
69°
3
91°
68°
4
91°
69°
5
90°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Owasso
Owasso's August 2026 forecast shows daily high temperatures ranging from 89° to 98°, with overnight lows between 68° and 77°. The average high for August is 93° with an average low of 72°. 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 Owasso. See also: September | October | November.
