S
M
T
W
T
F
S
26
79°
57°
27
83°
50°
28
81°
53°
29
82°
51°
30
83°
52°
31
90°
51°
1
76°
52°
2
75°
54°
3
85°
45°
4
91°
60°
5
90°
52°
6
94°
55°
7
91°
55°
8
91°
52°
9
86°
51°
10
85°
47°
11
86°
53°
12
81°
55°
13
84°
55°
14
81°
54°
15
76°
58°
16
83°
57°
17
86°
50°
18
85°
55°
19
86°
56°
20
91°
58°
21
83°
57°
22
78°
55°
23
82°
52°
24
86°
53°
25
84°
52°
26
80°
50°
27
79°
49°
28
82°
52°
29
83°
51°
30
84°
52°
31
81°
51°
1
83°
55°
2
82°
54°
3
81°
54°
4
84°
53°
5
83°
53°
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 78° to 91°, with overnight lows between 49° and 58°. The average high for August is 83° with an average low of 53°. 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.
