S
M
T
W
T
F
S
26
87°
58°
27
89°
61°
28
86°
64°
29
86°
61°
30
89°
64°
31
98°
61°
1
87°
60°
2
78°
55°
3
82°
56°
4
89°
53°
5
94°
55°
6
97°
63°
7
98°
66°
8
92°
69°
9
91°
67°
10
90°
64°
11
90°
65°
12
87°
66°
13
87°
63°
14
90°
61°
15
91°
66°
16
93°
68°
17
92°
68°
18
94°
65°
19
92°
65°
20
97°
63°
21
96°
66°
22
92°
70°
23
83°
63°
24
93°
58°
25
93°
63°
26
93°
65°
27
85°
66°
28
83°
55°
29
74°
56°
30
76°
53°
31
90°
51°
1
79°
55°
2
74°
52°
3
66°
49°
4
65°
46°
5
73°
48°
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 65° to 79°, with overnight lows between 46° and 55°. The average high for August is 71° with an average low of 50°. 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.
