S
M
T
W
T
F
S
26
83°
67°
27
84°
68°
28
83°
66°
29
83°
63°
30
83°
68°
31
91°
69°
1
86°
68°
2
88°
67°
3
89°
69°
4
90°
69°
5
89°
68°
6
87°
68°
7
82°
65°
8
82°
64°
9
83°
66°
10
85°
65°
11
81°
63°
12
82°
64°
13
83°
68°
14
88°
68°
15
85°
67°
16
83°
67°
17
83°
68°
18
85°
68°
19
84°
67°
20
82°
66°
21
81°
66°
22
80°
64°
23
81°
66°
24
80°
67°
25
82°
67°
26
82°
66°
27
81°
67°
28
87°
63°
29
85°
61°
30
84°
60°
31
84°
62°
1
85°
64°
2
87°
63°
3
87°
63°
4
85°
62°
5
82°
61°
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 80° to 91°, with overnight lows between 60° and 69°. The average high for August is 84° with an average low of 66°. 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.
