S
M
T
W
T
F
S
29
51°
23°
30
52°
24°
1
52°
20°
2
46°
21°
3
48°
17°
4
44°
31°
5
48°
31°
6
52°
26°
7
53°
27°
8
52°
28°
9
53°
30°
10
51°
25°
11
47°
24°
12
49°
20°
13
Hist. Avg.
46°
18°
14
Hist. Avg.
46°
18°
15
Hist. Avg.
46°
18°
16
Hist. Avg.
46°
18°
17
Hist. Avg.
46°
18°
18
Hist. Avg.
46°
18°
19
Hist. Avg.
46°
18°
20
Hist. Avg.
46°
18°
21
Hist. Avg.
46°
18°
22
Hist. Avg.
46°
18°
23
Hist. Avg.
46°
18°
24
Hist. Avg.
46°
18°
25
Hist. Avg.
47°
18°
26
Hist. Avg.
47°
18°
27
Hist. Avg.
47°
18°
28
Hist. Avg.
47°
18°
29
Hist. Avg.
47°
18°
30
Hist. Avg.
47°
18°
31
Hist. Avg.
47°
18°
1
Hist. Avg.
47°
18°
2
Hist. Avg.
48°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Capitol Hill
Capitol Hill's December 2026 forecast shows daily high temperatures ranging from 44° to 53°, with overnight lows between 17° and 31°. The average high for December is 50° with an average low of 25°. 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 Capitol Hill. See also: January | February | March.