S
M
T
W
T
F
S
31
67°
31°
1
64°
42°
2
72°
43°
3
80°
50°
4
86°
55°
5
85°
62°
6
84°
61°
7
68°
48°
8
66°
51°
9
73°
49°
10
75°
54°
11
79°
56°
12
74°
55°
13
73°
54°
14
75°
55°
15
74°
52°
16
69°
48°
17
70°
51°
18
71°
52°
19
71°
52°
20
72°
51°
21
72°
52°
22
73°
52°
23
73°
53°
24
71°
58°
25
73°
57°
26
73°
53°
27
74°
59°
28
75°
58°
29
74°
57°
30
73°
55°
1
73°
54°
2
74°
57°
3
77°
60°
4
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Dayton
Dayton's June 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 43° and 62°. The average high for June is 74° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Dayton. See also: July | August | September.