S
M
T
W
T
F
S
31
59°
49°
1
75°
44°
2
77°
45°
3
74°
50°
4
80°
50°
5
79°
47°
6
88°
51°
7
72°
46°
8
66°
44°
9
79°
47°
10
82°
50°
11
80°
49°
12
80°
52°
13
81°
50°
14
74°
45°
15
72°
50°
16
67°
49°
17
68°
48°
18
70°
49°
19
79°
51°
20
75°
50°
21
71°
49°
22
74°
51°
23
81°
52°
24
82°
52°
25
80°
48°
26
76°
52°
27
83°
53°
28
84°
52°
29
75°
48°
30
79°
52°
1
84°
53°
2
84°
54°
3
83°
53°
4
84°
54°
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 88°, with overnight lows between 44° and 54°. The average high for June is 78° with an average low of 50°. 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.