S
M
T
W
T
F
S
27
81°
54°
28
74°
53°
29
73°
53°
30
73°
54°
1
77°
54°
2
79°
57°
3
79°
58°
4
80°
60°
5
81°
60°
6
81°
57°
7
80°
55°
8
79°
57°
9
79°
56°
10
78°
56°
11
78°
54°
12
77°
57°
13
77°
57°
14
71°
51°
15
70°
53°
16
69°
52°
17
69°
55°
18
73°
54°
19
74°
48°
20
68°
48°
21
67°
49°
22
66°
53°
23
68°
52°
24
67°
49°
25
67°
49°
26
68°
48°
27
71°
50°
28
69°
50°
29
67°
48°
30
66°
49°
31
68°
53°
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 66° to 81°, with overnight lows between 48° and 60°. The average high for October is 73° with an average low of 53°. 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.
