S
M
T
W
T
F
S
31
51°
38°
1
62°
39°
2
62°
38°
3
68°
46°
4
81°
50°
5
72°
50°
6
69°
55°
7
65°
43°
8
70°
43°
9
74°
46°
10
77°
55°
11
79°
52°
12
77°
50°
13
79°
51°
14
82°
54°
15
81°
49°
16
70°
49°
17
71°
52°
18
70°
50°
19
71°
49°
20
71°
48°
21
72°
47°
22
71°
47°
23
71°
48°
24
72°
50°
25
73°
54°
26
73°
54°
27
74°
53°
28
73°
54°
29
73°
54°
30
74°
53°
1
73°
52°
2
74°
54°
3
75°
55°
4
77°
56°
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 62° to 82°, with overnight lows between 38° and 56°. The average high for June is 73° 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 Grafton. See also: July | August | September.