S
M
T
W
T
F
S
29
47°
25°
30
36°
19°
1
32°
16°
2
33°
24°
3
41°
25°
4
40°
25°
5
37°
24°
6
36°
20°
7
31°
18°
8
31°
23°
9
43°
23°
10
45°
22°
11
44°
23°
12
44°
22°
13
44°
23°
14
37°
20°
15
36°
21°
16
36°
14°
17
37°
11°
18
34°
7°
19
33°
5°
20
25°
10°
21
29°
16°
22
37°
14°
23
37°
14°
24
34°
13°
25
34°
18°
26
38°
19°
27
41°
18°
28
37°
14°
29
36°
14°
30
35°
6°
31
31°
4°
1
25°
10°
2
29°
18°
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 25° to 47°, with overnight lows between 4° and 25°. The average high for December is 36° with an average low of 17°. 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.
