S
M
T
W
T
F
S
27
80°
72°
28
78°
66°
29
78°
63°
30
77°
68°
1
78°
66°
2
95°
67°
3
105°
72°
4
100°
74°
5
97°
73°
6
93°
71°
7
89°
70°
8
83°
71°
9
80°
69°
10
78°
67°
11
73°
63°
12
71°
62°
13
72°
61°
14
76°
56°
15
87°
57°
16
96°
62°
17
93°
66°
18
85°
64°
19
81°
66°
20
76°
65°
21
75°
66°
22
71°
63°
23
72°
60°
24
76°
62°
25
75°
61°
26
74°
64°
27
77°
61°
28
75°
60°
29
73°
61°
30
74°
59°
31
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Diego
San Diego's October 2026 forecast shows daily high temperatures ranging from 71° to 93°, with overnight lows between 59° and 66°. The average high for October is 77° with an average low of 63°. 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 Diego. See also: November | December | January.
