S
M
T
W
T
F
S
29
45°
28°
30
42°
22°
1
31°
15°
2
29°
12°
3
32°
26°
4
35°
26°
5
32°
24°
6
32°
19°
7
28°
15°
8
26°
16°
9
31°
16°
10
34°
24°
11
35°
24°
12
39°
22°
13
37°
24°
14
32°
23°
15
33°
21°
16
33°
18°
17
32°
14°
18
29°
12°
19
28°
7°
20
23°
6°
21
21°
19°
22
31°
19°
23
32°
14°
24
32°
5°
25
26°
15°
26
26°
20°
27
32°
18°
28
32°
17°
29
30°
10°
30
30°
13°
31
27°
1°
1
27°
-1°
2
19°
8°
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 19° to 45°, with overnight lows between -1° and 28°. The average high for December is 31° with an average low of 16°. 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.
