S
M
T
W
T
F
S
29
39°
25°
30
42°
27°
1
41°
26°
2
40°
27°
3
42°
25°
4
40°
24°
5
40°
24°
6
38°
25°
7
40°
23°
8
34°
22°
9
31°
22°
10
32°
21°
11
32°
22°
12
33°
19°
13
33°
14°
14
34°
10°
15
29°
11°
16
25°
12°
17
27°
11°
18
26°
18°
19
30°
17°
20
33°
16°
21
31°
12°
22
30°
12°
23
28°
3°
24
27°
12°
25
24°
9°
26
27°
3°
27
24°
1°
28
19°
2°
29
23°
1°
30
21°
6°
31
23°
15°
1
34°
12°
2
34°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Marshfield
Marshfield's December 2026 forecast shows daily high temperatures ranging from 19° to 42°, with overnight lows between 1° and 27°. The average high for December is 32° with an average low of 15°. 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 Marshfield. See also: January | February | March.