S
M
T
W
T
F
S
26
82°
56°
27
84°
56°
28
86°
55°
29
82°
53°
30
86°
56°
31
87°
57°
1
81°
56°
2
84°
54°
3
83°
53°
4
78°
49°
5
78°
52°
6
79°
48°
7
81°
51°
8
85°
54°
9
82°
52°
10
84°
51°
11
79°
49°
12
78°
50°
13
79°
49°
14
80°
49°
15
79°
51°
16
83°
55°
17
84°
56°
18
89°
55°
19
88°
54°
20
86°
50°
21
81°
58°
22
87°
56°
23
86°
48°
24
79°
52°
25
82°
48°
26
79°
50°
27
80°
46°
28
80°
52°
29
79°
47°
30
77°
46°
31
78°
49°
1
82°
56°
2
86°
56°
3
84°
55°
4
75°
47°
5
76°
46°
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 46° and 58°. The average high for August is 82° with an average low of 52°. 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.
