S
M
T
W
T
F
S
31
80°
67°
1
81°
63°
2
83°
55°
3
82°
61°
4
87°
63°
5
85°
68°
6
87°
70°
7
84°
71°
8
85°
68°
9
87°
66°
10
87°
70°
11
84°
67°
12
85°
66°
13
86°
67°
14
89°
68°
15
88°
63°
16
79°
62°
17
79°
62°
18
81°
66°
19
80°
69°
20
81°
69°
21
83°
68°
22
86°
68°
23
83°
66°
24
86°
69°
25
87°
70°
26
89°
71°
27
87°
69°
28
85°
70°
29
83°
68°
30
84°
67°
1
82°
68°
2
84°
71°
3
86°
70°
4
85°
65°
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 79° to 89°, with overnight lows between 55° and 71°. The average high for June is 84° with an average low of 67°. 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.