S
M
T
W
T
F
S
27
63°
55°
28
70°
54°
29
76°
56°
30
74°
56°
1
73°
57°
2
77°
56°
3
77°
58°
4
73°
59°
5
72°
60°
6
75°
62°
7
74°
62°
8
77°
63°
9
80°
62°
10
70°
55°
11
69°
58°
12
74°
59°
13
75°
59°
14
73°
58°
15
66°
56°
16
66°
53°
17
65°
54°
18
65°
56°
19
66°
58°
20
65°
58°
21
66°
56°
22
66°
58°
23
67°
58°
24
66°
57°
25
67°
58°
26
66°
58°
27
67°
57°
28
65°
56°
29
65°
53°
30
64°
50°
31
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Francisco
San Francisco's October 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 50° and 63°. The average high for October is 70° with an average low of 57°. 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 Francisco. See also: November | December | January.
