S
M
T
W
T
F
S
28
75°
57°
29
76°
55°
30
80°
60°
1
75°
59°
2
75°
56°
3
73°
56°
4
75°
61°
5
75°
62°
6
80°
64°
7
75°
61°
8
75°
60°
9
76°
65°
10
78°
66°
11
79°
65°
12
80°
64°
13
80°
66°
14
84°
65°
15
84°
65°
16
77°
59°
17
76°
58°
18
77°
62°
19
76°
58°
20
75°
57°
21
77°
64°
22
85°
67°
23
87°
68°
24
85°
65°
25
81°
58°
26
76°
58°
27
86°
65°
28
86°
62°
29
85°
62°
30
81°
54°
31
80°
57°
1
77°
55°
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 73° to 87°, with overnight lows between 54° and 68°. The average high for July is 79° with an average low of 61°. 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.