S
M
T
W
T
F
S
27
66°
54°
28
60°
43°
29
61°
42°
30
74°
46°
1
78°
41°
2
78°
42°
3
77°
41°
4
75°
39°
5
74°
39°
6
83°
50°
7
85°
49°
8
87°
48°
9
85°
47°
10
85°
47°
11
82°
45°
12
79°
45°
13
76°
44°
14
64°
35°
15
67°
37°
16
67°
40°
17
66°
39°
18
67°
40°
19
67°
40°
20
66°
39°
21
66°
38°
22
60°
38°
23
57°
37°
24
59°
34°
25
64°
36°
26
64°
37°
27
63°
36°
28
63°
37°
29
61°
36°
30
56°
36°
31
62°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Big Bear Lake
Big Bear Lake's October 2026 forecast shows daily high temperatures ranging from 56° to 87°, with overnight lows between 34° and 50°. The average high for October is 70° with an average low of 40°. 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 Big Bear Lake. See also: November | December | January.