S
M
T
W
T
F
S
28
80°
56°
29
80°
57°
30
88°
65°
1
91°
68°
2
90°
70°
3
90°
67°
4
82°
70°
5
77°
63°
6
83°
61°
7
79°
62°
8
84°
59°
9
80°
62°
10
80°
61°
11
77°
55°
12
81°
58°
13
86°
68°
14
92°
66°
15
84°
60°
16
82°
59°
17
76°
58°
18
77°
57°
19
75°
55°
20
73°
55°
21
77°
58°
22
79°
57°
23
79°
60°
24
78°
54°
25
79°
59°
26
80°
60°
27
72°
56°
28
72°
55°
29
71°
54°
30
72°
55°
31
74°
58°
1
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grand Valley
Grand Valley's July 2026 forecast shows daily high temperatures ranging from 71° to 92°, with overnight lows between 54° and 68°. The average high for July is 78° with an average low of 58°. 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 Grand Valley. See also: August | September | October.
