S
M
T
W
T
F
S
29
60°
37°
30
58°
36°
1
59°
37°
2
61°
36°
3
64°
35°
4
57°
39°
5
62°
49°
6
69°
50°
7
70°
44°
8
71°
36°
9
59°
38°
10
60°
41°
11
64°
46°
12
66°
45°
13
65°
35°
14
66°
34°
15
54°
35°
16
56°
39°
17
61°
45°
18
62°
47°
19
62°
49°
20
68°
49°
21
70°
47°
22
69°
45°
23
67°
37°
24
68°
40°
25
64°
43°
26
66°
45°
27
64°
34°
28
65°
39°
29
54°
33°
30
63°
31°
31
52°
30°
1
51°
38°
2
59°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Arnold Line
Arnold Line's December 2026 forecast shows daily high temperatures ranging from 51° to 71°, with overnight lows between 30° and 50°. The average high for December is 62° with an average low of 40°. 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 Arnold Line. See also: January | February | March.
