S
M
T
W
T
F
S
29
47°
35°
30
47°
33°
1
45°
33°
2
45°
32°
3
46°
30°
4
44°
32°
5
44°
34°
6
50°
42°
7
54°
43°
8
58°
40°
9
59°
34°
10
47°
32°
11
46°
37°
12
48°
34°
13
47°
35°
14
43°
31°
15
49°
29°
16
42°
28°
17
41°
27°
18
41°
28°
19
42°
33°
20
43°
40°
21
51°
34°
22
54°
33°
23
48°
40°
24
53°
39°
25
56°
37°
26
51°
33°
27
46°
32°
28
49°
28°
29
48°
33°
30
39°
22°
31
53°
21°
1
35°
23°
2
34°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Arnold
Arnold's December 2026 forecast shows daily high temperatures ranging from 34° to 59°, with overnight lows between 21° and 43°. The average high for December is 47° with an average low of 33°. 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. See also: January | February | March.
