S
M
T
W
T
F
S
26
88°
68°
27
88°
67°
28
81°
63°
29
83°
57°
30
90°
58°
31
88°
63°
1
75°
67°
2
79°
63°
3
82°
57°
4
85°
61°
5
85°
63°
6
81°
66°
7
86°
65°
8
86°
64°
9
82°
57°
10
86°
65°
11
82°
64°
12
83°
65°
13
82°
66°
14
83°
63°
15
81°
61°
16
87°
69°
17
79°
62°
18
82°
64°
19
79°
53°
20
81°
59°
21
81°
61°
22
76°
56°
23
75°
53°
24
73°
56°
25
78°
57°
26
74°
56°
27
75°
56°
28
80°
59°
29
80°
58°
30
77°
57°
31
76°
56°
1
74°
60°
2
72°
60°
3
73°
58°
4
72°
54°
5
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Owosso
Owosso's August 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 53° and 64°. The average high for August is 76° with an average low of 57°. 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 Owosso. See also: September | October | November.