S
M
T
W
T
F
S
26
79°
63°
27
81°
60°
28
82°
63°
29
85°
62°
30
86°
59°
31
86°
61°
1
85°
59°
2
81°
58°
3
80°
59°
4
79°
56°
5
80°
57°
6
79°
56°
7
80°
58°
8
80°
61°
9
79°
61°
10
79°
60°
11
80°
64°
12
81°
65°
13
83°
58°
14
87°
56°
15
78°
56°
16
77°
63°
17
78°
62°
18
82°
56°
19
79°
56°
20
78°
63°
21
81°
63°
22
84°
62°
23
85°
61°
24
84°
62°
25
85°
54°
26
82°
54°
27
75°
60°
28
79°
60°
29
78°
61°
30
82°
62°
31
84°
60°
1
83°
52°
2
80°
58°
3
79°
54°
4
74°
53°
5
75°
51°
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 87°, with overnight lows between 51° and 65°. The average high for August is 81° with an average low of 59°. 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.
