S
M
T
W
T
F
S
29
60°
43°
30
61°
41°
1
59°
35°
2
56°
27°
3
46°
30°
4
47°
36°
5
51°
34°
6
49°
30°
7
47°
38°
8
52°
30°
9
55°
30°
10
45°
28°
11
43°
24°
12
41°
25°
13
40°
23°
14
42°
22°
15
39°
22°
16
38°
21°
17
39°
21°
18
40°
19°
19
39°
22°
20
38°
29°
21
39°
33°
22
45°
34°
23
45°
34°
24
46°
35°
25
55°
32°
26
53°
29°
27
43°
29°
28
38°
26°
29
42°
34°
30
Hist. Avg.
46°
32°
31
Hist. Avg.
46°
32°
1
Hist. Avg.
46°
32°
2
Hist. Avg.
45°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Arlington
Arlington's December 2026 forecast shows daily high temperatures ranging from 38° to 61°, with overnight lows between 19° and 43°. The average high for December is 46° with an average low of 30°. 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 Arlington. See also: January | February | March.
