S
M
T
W
T
F
S
27
66°
56°
28
75°
53°
29
88°
53°
30
84°
57°
1
81°
53°
2
80°
56°
3
95°
60°
4
89°
64°
5
85°
62°
6
90°
61°
7
86°
61°
8
84°
56°
9
72°
56°
10
66°
55°
11
70°
48°
12
70°
50°
13
75°
52°
14
80°
49°
15
84°
54°
16
88°
55°
17
86°
59°
18
72°
55°
19
66°
57°
20
68°
52°
21
66°
59°
22
63°
59°
23
70°
48°
24
73°
48°
25
72°
51°
26
71°
50°
27
69°
49°
28
69°
51°
29
70°
51°
30
67°
51°
31
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Carlos
San Carlos's October 2026 forecast shows daily high temperatures ranging from 67° to 73°, with overnight lows between 48° and 51°. The average high for October is 70° with an average low of 50°. 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 San Carlos. See also: November | December | January.