S
M
T
W
T
F
S
27
91°
72°
28
86°
66°
29
93°
59°
30
91°
61°
1
99°
61°
2
104°
64°
3
102°
71°
4
102°
73°
5
102°
71°
6
102°
68°
7
102°
73°
8
99°
68°
9
93°
66°
10
86°
64°
11
68°
57°
12
61°
54°
13
73°
50°
14
82°
49°
15
86°
55°
16
91°
70°
17
84°
62°
18
86°
59°
19
86°
56°
20
86°
59°
21
79°
57°
22
66°
58°
23
68°
54°
24
79°
52°
25
81°
52°
26
81°
52°
27
77°
50°
28
75°
50°
29
76°
59°
30
70°
56°
31
69°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in San Bernardino
San Bernardino's October 2026 forecast shows daily high temperatures ranging from 69° to 76°, with overnight lows between 56° and 59°. The average high for October is 72° 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 Bernardino. See also: November | December | January.
