S
M
T
W
T
F
S
27
93°
63°
28
95°
63°
29
93°
60°
30
90°
56°
1
88°
56°
2
83°
55°
3
81°
52°
4
82°
51°
5
82°
51°
6
80°
55°
7
82°
52°
8
84°
56°
9
87°
55°
10
89°
53°
11
83°
51°
12
80°
48°
13
77°
49°
14
78°
51°
15
80°
54°
16
83°
55°
17
85°
55°
18
86°
56°
19
87°
57°
20
86°
57°
21
86°
59°
22
87°
56°
23
87°
53°
24
80°
53°
25
79°
52°
26
78°
54°
27
76°
53°
28
79°
53°
29
83°
54°
30
78°
48°
31
79°
47°
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 76° to 95°, with overnight lows between 47° and 63°. The average high for October is 84° with an average low of 54°. 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.
