S
M
T
W
T
F
S
31
73°
43°
1
79°
50°
2
72°
49°
3
78°
57°
4
82°
63°
5
82°
61°
6
78°
56°
7
72°
57°
8
75°
61°
9
76°
60°
10
74°
59°
11
78°
59°
12
77°
57°
13
76°
59°
14
75°
57°
15
76°
56°
16
69°
52°
17
70°
53°
18
73°
60°
19
77°
58°
20
78°
61°
21
75°
60°
22
78°
62°
23
78°
62°
24
77°
59°
25
74°
62°
26
82°
63°
27
79°
59°
28
73°
56°
29
73°
57°
30
74°
58°
1
78°
64°
2
81°
65°
3
81°
64°
4
76°
58°
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 69° to 82°, with overnight lows between 49° and 65°. The average high for June is 76° with an average low of 59°. 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.