S
M
T
W
T
F
S
26
85°
68°
27
86°
68°
28
86°
67°
29
87°
68°
30
85°
67°
31
84°
66°
1
79°
63°
2
78°
62°
3
79°
65°
4
80°
66°
5
81°
66°
6
84°
65°
7
85°
66°
8
83°
66°
9
84°
65°
10
84°
65°
11
83°
66°
12
85°
66°
13
84°
67°
14
86°
58°
15
85°
58°
16
81°
60°
17
80°
61°
18
84°
60°
19
85°
57°
20
78°
55°
21
77°
55°
22
77°
57°
23
78°
57°
24
78°
58°
25
79°
60°
26
77°
59°
27
84°
59°
28
84°
56°
29
77°
55°
30
75°
55°
31
76°
56°
1
75°
54°
2
75°
53°
3
76°
54°
4
76°
54°
5
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ohio
Ohio's August 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 53° and 68°. The average high for August is 81° with an average low of 61°. 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 Ohio. See also: September | October | November.