S
M
T
W
T
F
S
27
87°
71°
28
N/A
29
82°
59°
30
89°
61°
1
90°
57°
2
103°
65°
3
102°
79°
4
104°
68°
5
103°
67°
6
102°
66°
7
98°
64°
8
92°
63°
9
91°
68°
10
85°
65°
11
79°
61°
12
77°
60°
13
81°
59°
14
79°
60°
15
80°
60°
16
84°
59°
17
78°
57°
18
80°
61°
19
80°
61°
20
80°
60°
21
79°
61°
22
80°
60°
23
79°
60°
24
79°
59°
25
80°
60°
26
78°
60°
27
74°
55°
28
70°
53°
29
70°
52°
30
71°
51°
31
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Rancho Bernardo
Rancho Bernardo's October 2026 forecast shows daily high temperatures ranging from 70° to 104°, with overnight lows between 51° and 68°. The average high for October is 82° with an average low of 60°. 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 Rancho Bernardo. See also: November | December | January.