S
M
T
W
T
F
S
31
77°
50°
1
77°
55°
2
70°
57°
3
77°
55°
4
72°
55°
5
77°
55°
6
73°
55°
7
72°
52°
8
75°
54°
9
73°
61°
10
86°
57°
11
97°
63°
12
82°
61°
13
77°
61°
14
73°
61°
15
72°
61°
16
72°
61°
17
73°
61°
18
77°
59°
19
75°
59°
20
73°
59°
21
80°
55°
22
80°
55°
23
82°
56°
24
81°
58°
25
84°
57°
26
75°
60°
27
74°
58°
28
79°
59°
29
81°
60°
30
79°
58°
1
78°
60°
2
80°
58°
3
79°
58°
4
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Cupertino
Cupertino's June 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 55° and 60°. The average high for June is 79° 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 June weather will actually feel in Cupertino. See also: July | August | September.
