S
M
T
W
T
F
S
29
44°
24°
30
47°
27°
1
48°
29°
2
45°
28°
3
46°
29°
4
44°
26°
5
46°
24°
6
45°
23°
7
48°
25°
8
48°
25°
9
49°
24°
10
48°
25°
11
49°
26°
12
48°
27°
13
48°
24°
14
44°
25°
15
48°
26°
16
47°
25°
17
Hist. Avg.
46°
23°
18
Hist. Avg.
46°
23°
19
Hist. Avg.
46°
23°
20
Hist. Avg.
46°
23°
21
Hist. Avg.
46°
23°
22
Hist. Avg.
46°
23°
23
Hist. Avg.
46°
23°
24
Hist. Avg.
46°
23°
25
Hist. Avg.
46°
23°
26
Hist. Avg.
46°
23°
27
Hist. Avg.
46°
23°
28
Hist. Avg.
46°
23°
29
Hist. Avg.
46°
23°
30
Hist. Avg.
46°
23°
31
Hist. Avg.
46°
24°
1
Hist. Avg.
46°
24°
2
Hist. Avg.
46°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Big Bear
Big Bear's December 2026 forecast shows daily high temperatures ranging from 44° to 49°, with overnight lows between 23° and 29°. The average high for December is 47° with an average low of 26°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Big Bear. See also: January | February | March.