S
M
T
W
T
F
S
29
63°
48°
30
68°
48°
1
67°
47°
2
67°
47°
3
64°
43°
4
54°
40°
5
60°
45°
6
63°
45°
7
63°
42°
8
56°
42°
9
54°
41°
10
53°
38°
11
53°
33°
12
52°
34°
13
54°
33°
14
54°
31°
15
52°
40°
16
56°
43°
17
66°
42°
18
63°
43°
19
62°
36°
20
61°
28°
21
58°
28°
22
50°
32°
23
52°
38°
24
64°
30°
25
65°
29°
26
51°
30°
27
51°
29°
28
52°
31°
29
51°
39°
30
55°
40°
31
66°
29°
1
65°
26°
2
51°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Marion
Marion's December 2026 forecast shows daily high temperatures ranging from 50° to 68°, with overnight lows between 24° and 48°. The average high for December is 58° with an average low of 37°. 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 Marion. See also: January | February | March.
