S
M
T
W
T
F
S
29
57°
45°
30
65°
45°
1
64°
44°
2
64°
42°
3
54°
35°
4
56°
36°
5
61°
44°
6
61°
39°
7
53°
37°
8
51°
34°
9
52°
37°
10
51°
32°
11
50°
30°
12
51°
31°
13
56°
30°
14
54°
30°
15
54°
39°
16
53°
38°
17
57°
39°
18
62°
33°
19
57°
28°
20
51°
25°
21
49°
26°
22
50°
30°
23
52°
30°
24
49°
28°
25
49°
26°
26
50°
27°
27
50°
27°
28
51°
28°
29
52°
34°
30
55°
32°
31
58°
28°
1
50°
24°
2
48°
23°
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 48° to 65°, with overnight lows between 23° and 45°. The average high for December is 54° 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 Marion. See also: January | February | March.
