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