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
86°
57°
2
85°
58°
3
87°
56°
4
86°
58°
5
88°
57°
6
87°
59°
7
87°
60°
8
85°
55°
9
83°
57°
10
82°
56°
11
78°
57°
12
77°
53°
13
72°
54°
14
75°
52°
15
76°
49°
16
80°
51°
17
82°
53°
18
83°
55°
19
84°
58°
20
81°
57°
21
82°
60°
22
83°
56°
23
82°
55°
24
81°
59°
25
84°
55°
26
85°
55°
27
84°
60°
28
80°
59°
29
77°
58°
30
74°
55°
31
72°
49°
1
66°
45°
2
69°
42°
3
73°
51°
4
73°
44°
5
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Big Bear
Big Bear's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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. See also: September | October | November.