S
M
T
W
T
F
S
26
86°
62°
27
87°
62°
28
86°
67°
29
82°
61°
30
84°
57°
31
88°
53°
1
87°
61°
2
84°
70°
3
85°
68°
4
86°
64°
5
90°
70°
6
93°
67°
7
90°
65°
8
90°
64°
9
91°
65°
10
92°
63°
11
84°
66°
12
85°
62°
13
93°
63°
14
89°
69°
15
84°
68°
16
86°
71°
17
91°
68°
18
84°
65°
19
87°
65°
20
84°
66°
21
76°
64°
22
83°
61°
23
83°
55°
24
80°
58°
25
78°
59°
26
82°
63°
27
80°
61°
28
80°
59°
29
79°
60°
30
81°
59°
31
79°
60°
1
81°
59°
2
78°
56°
3
77°
60°
4
84°
62°
5
83°
59°
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 76° to 87°, with overnight lows between 55° and 66°. The average high for August is 81° with an average low of 60°. 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.
