S
M
T
W
T
F
S
28
77°
54°
29
79°
55°
30
75°
57°
1
75°
55°
2
73°
55°
3
73°
57°
4
73°
59°
5
70°
59°
6
70°
57°
7
66°
55°
8
66°
55°
9
72°
57°
10
68°
57°
11
72°
55°
12
81°
63°
13
82°
68°
14
88°
64°
15
79°
63°
16
75°
59°
17
70°
57°
18
73°
59°
19
72°
59°
20
75°
61°
21
88°
66°
22
77°
63°
23
72°
61°
24
75°
59°
25
73°
59°
26
72°
59°
27
72°
57°
28
75°
59°
29
73°
59°
30
84°
57°
31
85°
58°
1
88°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Cupertino
Cupertino's July 2026 forecast shows daily high temperatures ranging from 84° to 88°, with overnight lows between 57° and 60°. The average high for July is 86° 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 Cupertino. See also: August | September | October.
