S
M
T
W
T
F
S
26
99°
69°
27
99°
74°
28
89°
69°
29
92°
68°
30
90°
73°
31
76°
64°
1
86°
62°
2
86°
60°
3
87°
67°
4
77°
62°
5
80°
56°
6
83°
58°
7
78°
61°
8
82°
55°
9
85°
69°
10
85°
63°
11
87°
68°
12
88°
66°
13
76°
65°
14
82°
62°
15
84°
67°
16
82°
63°
17
85°
56°
18
83°
60°
19
80°
50°
20
79°
55°
21
83°
62°
22
79°
55°
23
80°
49°
24
84°
53°
25
84°
60°
26
80°
56°
27
80°
54°
28
84°
64°
29
81°
67°
30
84°
64°
31
84°
58°
1
77°
55°
2
79°
56°
3
80°
57°
4
77°
58°
5
75°
60°
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 84°, with overnight lows between 54° and 67°. The average high for August is 80° with an average low of 59°. 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.
