S
M
T
W
T
F
S
26
80°
59°
27
84°
56°
28
83°
65°
29
84°
53°
30
85°
49°
31
86°
51°
1
89°
53°
2
90°
52°
3
90°
52°
4
88°
53°
5
87°
55°
6
84°
55°
7
83°
56°
8
84°
57°
9
83°
54°
10
80°
53°
11
79°
53°
12
77°
52°
13
78°
52°
14
79°
50°
15
75°
52°
16
77°
52°
17
76°
50°
18
76°
51°
19
77°
52°
20
77°
51°
21
79°
51°
22
80°
52°
23
80°
53°
24
81°
52°
25
80°
52°
26
80°
51°
27
79°
52°
28
80°
52°
29
78°
51°
30
77°
52°
31
77°
52°
1
78°
51°
2
78°
51°
3
75°
50°
4
72°
51°
5
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Big Bear Lake
Big Bear Lake's August 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 48° and 57°. The average high for August is 80° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Big Bear Lake. See also: September | October | November.
