S
M
T
W
T
F
S
29
52°
41°
30
57°
41°
1
54°
38°
2
47°
32°
3
44°
30°
4
49°
34°
5
54°
39°
6
46°
33°
7
42°
26°
8
40°
23°
9
40°
24°
10
41°
29°
11
43°
29°
12
44°
30°
13
45°
25°
14
42°
24°
15
41°
29°
16
41°
32°
17
42°
29°
18
46°
25°
19
42°
22°
20
40°
21°
21
38°
22°
22
39°
24°
23
43°
25°
24
40°
23°
25
39°
22°
26
39°
20°
27
40°
20°
28
38°
21°
29
38°
21°
30
39°
22°
31
39°
20°
1
38°
16°
2
37°
15°
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 37° to 57°, with overnight lows between 15° and 41°. The average high for December is 43° with an average low of 26°. 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.
