S
M
T
W
T
F
S
26
88°
67°
27
86°
69°
28
89°
69°
29
88°
68°
30
88°
69°
31
88°
69°
1
88°
68°
2
87°
69°
3
88°
69°
4
89°
68°
5
88°
68°
6
87°
67°
7
87°
68°
8
88°
64°
9
81°
62°
10
81°
61°
11
82°
66°
12
82°
67°
13
83°
67°
14
84°
68°
15
85°
67°
16
85°
65°
17
85°
59°
18
82°
60°
19
82°
64°
20
84°
65°
21
85°
66°
22
87°
64°
23
86°
65°
24
85°
60°
25
80°
60°
26
80°
59°
27
78°
59°
28
78°
58°
29
80°
58°
30
80°
61°
31
82°
64°
1
85°
64°
2
85°
63°
3
84°
58°
4
84°
55°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dayton
Dayton's August 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 55° and 69°. The average high for August is 84° with an average low of 64°. 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 Dayton. See also: September | October | November.
