S
M
T
W
T
F
S
28
80°
57°
29
81°
35°
30
80°
36°
1
80°
33°
2
83°
35°
3
87°
38°
4
89°
39°
5
89°
45°
6
90°
47°
7
93°
48°
8
94°
49°
9
94°
49°
10
94°
46°
11
94°
46°
12
97°
70°
13
91°
69°
14
93°
70°
15
93°
70°
16
90°
68°
17
90°
65°
18
88°
65°
19
92°
62°
20
90°
65°
21
91°
64°
22
91°
65°
23
93°
65°
24
95°
66°
25
94°
63°
26
91°
64°
27
97°
65°
28
97°
65°
29
96°
64°
30
90°
64°
31
90°
63°
1
91°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grand Canyon Caverns
Grand Canyon Caverns's July 2026 forecast shows daily high temperatures ranging from 88° to 97°, with overnight lows between 62° and 70°. The average high for July is 92° with an average low of 66°. 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 Canyon Caverns. See also: August | September | October.