S
M
T
W
T
F
S
29
75°
53°
30
76°
52°
1
75°
52°
2
71°
51°
3
74°
47°
4
68°
46°
5
67°
48°
6
69°
48°
7
69°
49°
8
68°
46°
9
66°
51°
10
67°
45°
11
66°
42°
12
66°
42°
13
65°
43°
14
66°
44°
15
67°
43°
16
66°
44°
17
66°
44°
18
67°
45°
19
67°
46°
20
68°
46°
21
70°
49°
22
70°
52°
23
68°
44°
24
71°
43°
25
66°
43°
26
66°
44°
27
67°
45°
28
68°
46°
29
70°
47°
30
70°
47°
31
71°
48°
1
70°
45°
2
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Brea Chem
Brea Chem's December 2026 forecast shows daily high temperatures ranging from 65° to 76°, with overnight lows between 42° and 53°. The average high for December is 69° with an average low of 47°. 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 Brea Chem. See also: January | February | March.
