S
M
T
W
T
F
S
27
N/A
28
72°
59°
29
77°
55°
30
74°
61°
1
73°
56°
2
94°
60°
3
97°
69°
4
97°
73°
5
96°
71°
6
96°
68°
7
88°
67°
8
85°
66°
9
81°
67°
10
80°
65°
11
78°
58°
12
74°
57°
13
78°
56°
14
81°
58°
15
82°
59°
16
84°
58°
17
85°
61°
18
84°
58°
19
76°
54°
20
79°
57°
21
78°
58°
22
79°
57°
23
78°
57°
24
78°
56°
25
77°
57°
26
77°
56°
27
73°
52°
28
68°
49°
29
69°
48°
30
70°
49°
31
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Clemente
San Clemente's October 2026 forecast shows daily high temperatures ranging from 68° to 96°, with overnight lows between 48° and 68°. The average high for October is 79° with an average low of 58°. 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 Clemente. See also: November | December | January.