S
M
T
W
T
F
S
26
95°
70°
27
88°
72°
28
90°
72°
29
91°
72°
30
84°
68°
31
75°
63°
1
81°
63°
2
82°
63°
3
86°
63°
4
70°
55°
5
79°
50°
6
84°
55°
7
75°
61°
8
81°
55°
9
N/A
10
82°
62°
11
81°
60°
12
80°
61°
13
77°
57°
14
73°
62°
15
75°
59°
16
75°
56°
17
79°
61°
18
82°
63°
19
77°
60°
20
78°
59°
21
80°
60°
22
79°
57°
23
83°
63°
24
79°
63°
25
79°
62°
26
83°
63°
27
82°
62°
28
78°
61°
29
72°
58°
30
71°
56°
31
71°
60°
1
72°
60°
2
76°
59°
3
77°
61°
4
78°
60°
5
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Ortonville
Ortonville's August 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 56° and 63°. The average high for August is 78° 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 Ortonville. See also: September | October | November.