S
M
T
W
T
F
S
29
52°
32°
30
55°
33°
1
50°
25°
2
54°
25°
3
43°
20°
4
45°
17°
5
38°
18°
6
37°
19°
7
38°
23°
8
37°
20°
9
38°
16°
10
35°
18°
11
37°
22°
12
42°
23°
13
45°
17°
14
39°
18°
15
35°
22°
16
38°
29°
17
42°
30°
18
48°
30°
19
51°
28°
20
51°
30°
21
48°
33°
22
51°
27°
23
49°
23°
24
46°
21°
25
40°
25°
26
41°
28°
27
46°
30°
28
47°
28°
29
49°
26°
30
46°
20°
31
45°
14°
1
36°
17°
2
33°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Centralia
Centralia's December 2026 forecast shows daily high temperatures ranging from 33° to 55°, with overnight lows between 14° and 33°. The average high for December is 44° with an average low of 24°. 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 Centralia. See also: January | February | March.