S
M
T
W
T
F
S
26
79°
57°
27
83°
50°
28
81°
53°
29
82°
51°
30
83°
52°
31
90°
51°
1
76°
52°
2
75°
54°
3
85°
45°
4
91°
60°
5
90°
52°
6
94°
55°
7
91°
55°
8
91°
52°
9
86°
51°
10
85°
47°
11
86°
60°
12
79°
56°
13
86°
57°
14
86°
56°
15
85°
55°
16
85°
54°
17
85°
56°
18
81°
55°
19
82°
56°
20
83°
56°
21
87°
57°
22
88°
58°
23
89°
57°
24
82°
51°
25
80°
54°
26
82°
55°
27
79°
54°
28
79°
52°
29
78°
54°
30
77°
53°
31
80°
54°
1
79°
55°
2
75°
50°
3
82°
53°
4
85°
55°
5
85°
54°
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 75° to 89°, with overnight lows between 50° and 60°. The average high for August is 83° with an average low of 55°. 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.
