S
M
T
W
T
F
S
26
82°
62°
27
78°
63°
28
84°
65°
29
84°
65°
30
83°
64°
31
82°
65°
1
84°
64°
2
82°
65°
3
84°
64°
4
83°
63°
5
79°
63°
6
82°
64°
7
84°
60°
8
76°
56°
9
76°
56°
10
77°
59°
11
76°
63°
12
78°
63°
13
82°
65°
14
84°
64°
15
83°
62°
16
76°
60°
17
76°
55°
18
77°
59°
19
78°
63°
20
82°
61°
21
83°
62°
22
82°
61°
23
78°
55°
24
75°
54°
25
76°
54°
26
75°
55°
27
76°
54°
28
77°
53°
29
78°
54°
30
82°
55°
31
82°
61°
1
81°
60°
2
81°
53°
3
80°
50°
4
73°
51°
5
73°
56°
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 73° to 84°, with overnight lows between 50° and 65°. The average high for August is 80° with an average low of 60°. 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.