S
M
T
W
T
F
S
29
44°
34°
30
44°
36°
1
44°
37°
2
43°
39°
3
45°
37°
4
44°
38°
5
47°
35°
6
43°
35°
7
43°
41°
8
48°
33°
9
48°
35°
10
44°
40°
11
46°
42°
12
50°
41°
13
52°
41°
14
50°
39°
15
49°
41°
16
48°
43°
17
51°
42°
18
51°
40°
19
50°
37°
20
47°
32°
21
43°
32°
22
42°
33°
23
41°
32°
24
42°
33°
25
43°
34°
26
42°
31°
27
42°
35°
28
43°
33°
29
45°
30°
30
43°
32°
31
40°
35°
1
43°
36°
2
43°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Steilacoom
Steilacoom's December 2026 forecast shows daily high temperatures ranging from 40° to 52°, with overnight lows between 30° and 43°. The average high for December is 45° with an average low of 36°. 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 Steilacoom. See also: January | February | March.
