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
89°
57°
5
100°
56°
6
96°
55°
7
95°
55°
8
91°
52°
9
83°
52°
10
85°
53°
11
84°
55°
12
83°
53°
13
84°
54°
14
81°
53°
15
84°
54°
16
85°
52°
17
83°
52°
18
82°
53°
19
83°
51°
20
80°
51°
21
78°
54°
22
78°
50°
23
80°
55°
24
77°
48°
25
84°
52°
26
85°
55°
27
84°
55°
28
84°
54°
29
77°
54°
30
76°
47°
31
76°
51°
1
74°
52°
2
75°
47°
3
75°
49°
4
76°
49°
5
74°
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 74° to 100°, with overnight lows between 47° and 57°. The average high for August is 82° with an average low of 52°. 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.
