S
M
T
W
T
F
S
26
78°
55°
27
79°
54°
28
78°
57°
29
79°
57°
30
80°
59°
31
83°
61°
1
84°
61°
2
85°
62°
3
86°
62°
4
86°
59°
5
84°
54°
6
78°
54°
7
76°
55°
8
77°
55°
9
78°
57°
10
80°
54°
11
80°
60°
12
82°
58°
13
83°
59°
14
82°
60°
15
83°
61°
16
82°
57°
17
84°
55°
18
78°
53°
19
75°
52°
20
77°
52°
21
77°
58°
22
78°
58°
23
75°
56°
24
76°
56°
25
79°
59°
26
81°
57°
27
81°
51°
28
79°
53°
29
75°
56°
30
74°
57°
31
81°
58°
1
82°
56°
2
81°
55°
3
80°
50°
4
79°
48°
5
79°
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 74° to 86°, with overnight lows between 48° and 62°. The average high for August is 80° with an average low of 56°. 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.
