S
M
T
W
T
F
S
31
62°
32°
1
66°
37°
2
70°
40°
3
74°
50°
4
81°
52°
5
82°
61°
6
79°
60°
7
69°
52°
8
69°
52°
9
72°
55°
10
76°
59°
11
74°
61°
12
77°
59°
13
76°
58°
14
77°
54°
15
69°
50°
16
67°
49°
17
68°
51°
18
69°
51°
19
70°
53°
20
70°
52°
21
71°
52°
22
71°
53°
23
72°
55°
24
70°
58°
25
72°
53°
26
71°
54°
27
71°
60°
28
74°
59°
29
72°
57°
30
73°
56°
1
71°
55°
2
72°
57°
3
74°
61°
4
78°
62°
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 82°, with overnight lows between 40° and 62°. The average high for June is 73° with an average low of 55°. 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.