S
M
T
W
T
F
S
27
65°
58°
28
70°
52°
29
75°
56°
30
77°
55°
1
73°
57°
2
75°
56°
3
79°
58°
4
77°
58°
5
75°
60°
6
77°
61°
7
82°
64°
8
76°
60°
9
75°
60°
10
79°
61°
11
71°
54°
12
76°
59°
13
77°
58°
14
75°
58°
15
68°
55°
16
67°
52°
17
67°
53°
18
68°
55°
19
67°
57°
20
66°
57°
21
67°
55°
22
67°
57°
23
68°
57°
24
67°
55°
25
68°
56°
26
66°
56°
27
67°
55°
28
66°
55°
29
65°
52°
30
65°
48°
31
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in South San Francisco
South San Francisco's October 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 48° and 64°. The average high for October is 71° with an average low of 56°. 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 South San Francisco. See also: November | December | January.
