S
M
T
W
T
F
S
31
76°
55°
1
78°
56°
2
81°
58°
3
80°
57°
4
80°
56°
5
79°
57°
6
81°
53°
7
78°
47°
8
70°
53°
9
72°
51°
10
72°
49°
11
73°
50°
12
73°
52°
13
75°
52°
14
77°
57°
15
82°
60°
16
82°
58°
17
77°
55°
18
78°
61°
19
77°
62°
20
80°
58°
21
78°
53°
22
75°
51°
23
76°
56°
24
77°
54°
25
76°
53°
26
77°
60°
27
80°
57°
28
77°
54°
29
78°
61°
30
81°
61°
1
85°
56°
2
83°
63°
3
79°
61°
4
83°
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 70° to 85°, with overnight lows between 47° and 65°. The average high for June is 78° with an average low of 56°. 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.