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°
67°
9
96°
66°
10
85°
62°
11
71°
61°
12
65°
53°
13
68°
55°
14
78°
55°
15
85°
56°
16
87°
58°
17
87°
55°
18
87°
59°
19
88°
58°
20
87°
59°
21
86°
46°
22
84°
56°
23
84°
56°
24
84°
56°
25
83°
55°
26
83°
56°
27
82°
55°
28
83°
55°
29
82°
54°
30
82°
54°
31
80°
53°
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 65° to 99°, with overnight lows between 46° and 67°. The average high for October is 83° 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 Bernardino. See also: November | December | January.
