S
M
T
W
T
F
S
28
83°
69°
29
89°
67°
30
91°
72°
1
91°
71°
2
93°
71°
3
94°
72°
4
93°
72°
5
85°
70°
6
87°
70°
7
86°
70°
8
89°
68°
9
85°
71°
10
80°
71°
11
76°
69°
12
86°
69°
13
88°
67°
14
89°
65°
15
88°
67°
16
91°
71°
17
91°
70°
18
86°
71°
19
81°
63°
20
85°
59°
21
84°
69°
22
78°
58°
23
78°
53°
24
82°
58°
25
82°
64°
26
81°
62°
27
84°
64°
28
79°
63°
29
79°
57°
30
82°
58°
31
85°
61°
1
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grantsville
Grantsville's July 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 57° and 66°. The average high for July is 82° 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 Grantsville. See also: August | September | October.