S
M
T
W
T
F
S
26
73°
61°
27
72°
58°
28
71°
58°
29
76°
57°
30
73°
55°
31
74°
54°
1
70°
53°
2
69°
53°
3
69°
55°
4
71°
54°
5
71°
55°
6
72°
57°
7
73°
58°
8
74°
61°
9
75°
55°
10
72°
58°
11
74°
59°
12
75°
61°
13
74°
55°
14
75°
52°
15
69°
56°
16
71°
54°
17
70°
52°
18
69°
53°
19
70°
56°
20
69°
54°
21
70°
53°
22
69°
56°
23
70°
58°
24
72°
51°
25
71°
52°
26
67°
59°
27
71°
53°
28
72°
53°
29
66°
51°
30
66°
51°
31
67°
49°
1
66°
51°
2
66°
55°
3
69°
51°
4
71°
50°
5
66°
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 66° to 76°, with overnight lows between 49° and 61°. The average high for August is 71° 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.
