S
M
T
W
T
F
S
29
52°
26°
30
54°
29°
1
56°
31°
2
55°
28°
3
52°
28°
4
55°
29°
5
57°
32°
6
54°
28°
7
51°
31°
8
50°
22°
9
47°
26°
10
48°
27°
11
52°
27°
12
53°
31°
13
54°
31°
14
53°
26°
15
50°
26°
16
52°
25°
17
53°
26°
18
54°
28°
19
54°
31°
20
55°
32°
21
49°
21°
22
47°
25°
23
47°
26°
24
51°
25°
25
51°
24°
26
51°
32°
27
51°
26°
28
53°
24°
29
54°
21°
30
Hist. Avg.
52°
27°
31
Hist. Avg.
52°
27°
1
Hist. Avg.
52°
28°
2
Hist. Avg.
52°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Washington
Washington's December 2026 forecast shows daily high temperatures ranging from 47° to 57°, with overnight lows between 21° and 32°. The average high for December is 52° with an average low of 27°. 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 Washington. See also: January | February | March.
