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