S
M
T
W
T
F
S
26
86°
56°
27
81°
55°
28
79°
53°
29
78°
52°
30
78°
51°
31
79°
53°
1
85°
55°
2
85°
54°
3
82°
50°
4
81°
49°
5
84°
53°
6
85°
52°
7
80°
50°
8
81°
51°
9
80°
56°
10
86°
58°
11
88°
58°
12
89°
57°
13
89°
55°
14
88°
54°
15
88°
52°
16
87°
48°
17
86°
52°
18
82°
53°
19
79°
48°
20
79°
48°
21
80°
50°
22
78°
46°
23
78°
49°
24
80°
51°
25
84°
55°
26
85°
54°
27
86°
52°
28
85°
55°
29
86°
55°
30
84°
54°
31
85°
55°
1
83°
50°
2
82°
49°
3
81°
50°
4
80°
52°
5
78°
47°
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 46° and 58°. The average high for August is 83° with an average low of 52°. 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.
