S
M
T
W
T
F
S
26
86°
68°
27
84°
62°
28
83°
63°
29
84°
68°
30
85°
64°
31
85°
64°
1
86°
62°
2
84°
63°
3
84°
63°
4
83°
62°
5
83°
62°
6
84°
64°
7
84°
65°
8
85°
66°
9
84°
68°
10
84°
68°
11
85°
65°
12
84°
66°
13
89°
64°
14
90°
61°
15
83°
61°
16
83°
62°
17
84°
64°
18
87°
61°
19
82°
62°
20
82°
59°
21
83°
60°
22
83°
63°
23
82°
60°
24
81°
59°
25
82°
66°
26
85°
66°
27
88°
65°
28
89°
66°
29
89°
59°
30
88°
58°
31
80°
61°
1
82°
62°
2
82°
64°
3
86°
59°
4
81°
62°
5
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Downtown Cincinnati
Downtown Cincinnati's August 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 58° and 68°. The average high for August is 84° with an average low of 63°. 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 Downtown Cincinnati. See also: September | October | November.