S
M
T
W
T
F
S
26
88°
57°
27
85°
58°
28
90°
57°
29
90°
59°
30
89°
60°
31
89°
59°
1
90°
59°
2
90°
58°
3
89°
58°
4
91°
59°
5
86°
58°
6
81°
56°
7
85°
57°
8
88°
56°
9
88°
57°
10
90°
49°
11
88°
46°
12
79°
47°
13
81°
51°
14
84°
50°
15
89°
48°
16
83°
47°
17
84°
43°
18
77°
44°
19
78°
48°
20
83°
54°
21
88°
53°
22
87°
54°
23
88°
47°
24
88°
43°
25
77°
42°
26
76°
45°
27
78°
52°
28
85°
51°
29
86°
53°
30
86°
44°
31
84°
42°
1
73°
48°
2
76°
49°
3
83°
46°
4
75°
40°
5
71°
45°
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 71° to 91°, with overnight lows between 40° and 60°. The average high for August is 84° with an average low of 51°. 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.
