S
M
T
W
T
F
S
28
80°
61°
29
85°
64°
30
85°
63°
1
94°
72°
2
99°
77°
3
98°
73°
4
92°
66°
5
86°
64°
6
75°
62°
7
80°
59°
8
79°
62°
9
82°
65°
10
85°
62°
11
85°
63°
12
87°
65°
13
85°
65°
14
83°
61°
15
76°
57°
16
77°
58°
17
78°
62°
18
78°
61°
19
80°
63°
20
81°
64°
21
78°
64°
22
78°
65°
23
79°
64°
24
78°
64°
25
79°
63°
26
80°
64°
27
82°
64°
28
83°
64°
29
84°
65°
30
83°
66°
31
84°
66°
1
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grafton
Grafton's July 2026 forecast shows daily high temperatures ranging from 75° to 99°, with overnight lows between 57° and 77°. The average high for July is 83° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Grafton. See also: August | September | October.