S
M
T
W
T
F
S
26
83°
54°
27
80°
55°
28
82°
54°
29
83°
54°
30
81°
53°
31
78°
53°
1
78°
52°
2
81°
50°
3
80°
47°
4
77°
47°
5
78°
48°
6
77°
47°
7
78°
48°
8
77°
48°
9
78°
47°
10
77°
50°
11
77°
50°
12
79°
47°
13
79°
47°
14
77°
46°
15
77°
47°
16
78°
48°
17
77°
50°
18
78°
53°
19
80°
54°
20
81°
53°
21
78°
46°
22
76°
46°
23
77°
49°
24
76°
51°
25
79°
49°
26
80°
48°
27
78°
47°
28
75°
47°
29
76°
46°
30
75°
44°
31
75°
50°
1
76°
47°
2
Hist. Avg.
77°
47°
3
Hist. Avg.
76°
47°
4
Hist. Avg.
76°
47°
5
Hist. Avg.
76°
47°
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 75° to 83°, with overnight lows between 44° and 55°. The average high for August is 78° with an average low of 49°. 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.
