S
M
T
W
T
F
S
29
48°
38°
30
55°
35°
1
53°
40°
2
56°
37°
3
49°
33°
4
47°
27°
5
52°
24°
6
38°
25°
7
44°
34°
8
45°
30°
9
46°
25°
10
42°
22°
11
40°
21°
12
38°
20°
13
39°
26°
14
42°
32°
15
44°
33°
16
53°
32°
17
53°
25°
18
44°
25°
19
41°
20°
20
37°
22°
21
42°
24°
22
46°
27°
23
47°
29°
24
44°
26°
25
41°
27°
26
40°
24°
27
39°
22°
28
40°
25°
29
44°
22°
30
41°
22°
31
39°
20°
1
39°
20°
2
38°
20°
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 56°, with overnight lows between 20° and 40°. The average high for December is 44° with an average low of 27°. 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.
