S
M
T
W
T
F
S
29
39°
26°
30
40°
28°
1
42°
28°
2
40°
29°
3
39°
28°
4
40°
28°
5
39°
27°
6
41°
25°
7
38°
23°
8
36°
25°
9
36°
29°
10
40°
30°
11
47°
24°
12
37°
22°
13
45°
34°
14
47°
34°
15
Hist. Avg.
39°
24°
16
Hist. Avg.
38°
24°
17
Hist. Avg.
38°
24°
18
Hist. Avg.
38°
24°
19
Hist. Avg.
38°
23°
20
Hist. Avg.
38°
23°
21
Hist. Avg.
37°
23°
22
Hist. Avg.
37°
22°
23
Hist. Avg.
37°
22°
24
Hist. Avg.
37°
22°
25
Hist. Avg.
36°
22°
26
Hist. Avg.
36°
22°
27
Hist. Avg.
36°
21°
28
Hist. Avg.
36°
21°
29
Hist. Avg.
36°
21°
30
Hist. Avg.
36°
21°
31
Hist. Avg.
35°
20°
1
Hist. Avg.
35°
20°
2
Hist. Avg.
35°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Marion
Marion's December 2026 forecast shows daily high temperatures ranging from 36° to 47°, with overnight lows between 22° and 34°. The average high for December is 40° with an average low of 28°. 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.
