S
M
T
W
T
F
S
29
45°
25°
30
43°
26°
1
43°
26°
2
44°
38°
3
57°
32°
4
59°
25°
5
44°
27°
6
42°
28°
7
48°
31°
8
52°
35°
9
43°
24°
10
42°
23°
11
Hist. Avg.
46°
26°
12
Hist. Avg.
45°
26°
13
Hist. Avg.
45°
25°
14
Hist. Avg.
45°
25°
15
Hist. Avg.
44°
25°
16
Hist. Avg.
44°
25°
17
Hist. Avg.
44°
24°
18
Hist. Avg.
44°
24°
19
Hist. Avg.
43°
24°
20
Hist. Avg.
43°
24°
21
Hist. Avg.
43°
24°
22
Hist. Avg.
43°
24°
23
Hist. Avg.
43°
23°
24
Hist. Avg.
42°
23°
25
Hist. Avg.
42°
23°
26
Hist. Avg.
42°
23°
27
Hist. Avg.
42°
23°
28
Hist. Avg.
42°
23°
29
Hist. Avg.
42°
22°
30
Hist. Avg.
42°
22°
31
Hist. Avg.
42°
22°
1
Hist. Avg.
42°
22°
2
Hist. Avg.
41°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Ashburn
Ashburn's December 2026 forecast shows daily high temperatures ranging from 42° to 59°, with overnight lows between 23° and 38°. The average high for December is 47° with an average low of 28°. 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 Ashburn. See also: January | February | March.
