S
M
T
W
T
F
S
27
71°
40°
28
73°
38°
29
76°
44°
30
74°
51°
1
77°
45°
2
80°
45°
3
79°
46°
4
81°
46°
5
80°
47°
6
75°
42°
7
78°
43°
8
79°
41°
9
67°
41°
10
62°
37°
11
64°
30°
12
66°
32°
13
68°
32°
14
71°
39°
15
80°
41°
16
82°
49°
17
67°
41°
18
68°
43°
19
63°
42°
20
66°
42°
21
68°
42°
22
64°
41°
23
63°
40°
24
64°
40°
25
65°
43°
26
63°
41°
27
63°
45°
28
60°
41°
29
62°
40°
30
61°
40°
31
62°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Santa Clara
Santa Clara's October 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 40° and 49°. The average high for October is 66° with an average low of 42°. 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 Santa Clara. See also: November | December | January.