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