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