S
M
T
W
T
F
S
27
68°
55°
28
72°
52°
29
81°
54°
30
81°
57°
1
77°
57°
2
79°
61°
3
91°
61°
4
90°
64°
5
84°
64°
6
84°
63°
7
82°
61°
8
81°
59°
9
72°
61°
10
70°
52°
11
70°
50°
12
68°
50°
13
75°
52°
14
77°
50°
15
84°
52°
16
91°
55°
17
84°
57°
18
70°
54°
19
64°
57°
20
68°
52°
21
66°
57°
22
63°
57°
23
70°
54°
24
73°
48°
25
72°
48°
26
68°
51°
27
67°
46°
28
69°
49°
29
70°
48°
30
69°
48°
31
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Cupertino
Cupertino's October 2026 forecast shows daily high temperatures ranging from 63° to 70°, with overnight lows between 46° and 51°. The average high for October is 68° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Cupertino. See also: November | December | January.
