S
M
T
W
T
F
S
29
49°
25°
30
36°
19°
1
34°
17°
2
36°
26°
3
44°
26°
4
39°
25°
5
36°
24°
6
35°
17°
7
32°
13°
8
33°
24°
9
44°
24°
10
45°
23°
11
45°
23°
12
44°
22°
13
45°
24°
14
38°
20°
15
38°
22°
16
40°
15°
17
39°
11°
18
32°
5°
19
33°
4°
20
26°
13°
21
32°
16°
22
37°
9°
23
36°
11°
24
33°
15°
25
37°
19°
26
36°
19°
27
40°
10°
28
37°
5°
29
33°
10°
30
33°
5°
31
29°
3°
1
26°
16°
2
31°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Arthur
Arthur's December 2026 forecast shows daily high temperatures ranging from 26° to 49°, with overnight lows between 3° and 26°. The average high for December is 37° 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 Arthur. See also: January | February | March.
