S
M
T
W
T
F
S
31
67°
36°
1
67°
43°
2
72°
39°
3
80°
48°
4
84°
49°
5
82°
56°
6
81°
62°
7
70°
53°
8
67°
48°
9
74°
52°
10
79°
56°
11
81°
56°
12
77°
57°
13
77°
59°
14
78°
59°
15
79°
52°
16
67°
47°
17
68°
48°
18
70°
49°
19
70°
50°
20
71°
49°
21
71°
50°
22
72°
50°
23
71°
52°
24
71°
56°
25
72°
51°
26
71°
51°
27
71°
57°
28
74°
56°
29
72°
54°
30
73°
54°
1
71°
52°
2
72°
54°
3
74°
58°
4
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Grafton
Grafton's June 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 39° and 62°. The average high for June is 74° with an average low of 53°. 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 Grafton. See also: July | August | September.