S
M
T
W
T
F
S
31
78°
45°
1
75°
54°
2
71°
50°
3
79°
53°
4
83°
57°
5
89°
63°
6
87°
62°
7
84°
59°
8
75°
59°
9
76°
60°
10
77°
63°
11
85°
65°
12
84°
64°
13
84°
63°
14
85°
64°
15
86°
59°
16
75°
58°
17
76°
60°
18
77°
61°
19
77°
59°
20
78°
61°
21
78°
61°
22
79°
64°
23
79°
64°
24
80°
63°
25
80°
63°
26
81°
64°
27
85°
65°
28
84°
64°
29
80°
61°
30
79°
59°
1
79°
59°
2
80°
61°
3
81°
65°
4
81°
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 71° to 89°, with overnight lows between 50° and 65°. The average high for June is 80° with an average low of 61°. 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.