S
M
T
W
T
F
S
29
39°
29°
30
40°
27°
1
39°
29°
2
40°
23°
3
38°
22°
4
35°
28°
5
37°
33°
6
42°
39°
7
48°
31°
8
52°
28°
9
49°
26°
10
36°
25°
11
37°
23°
12
38°
25°
13
36°
27°
14
37°
25°
15
34°
21°
16
33°
23°
17
33°
26°
18
35°
28°
19
35°
31°
20
41°
31°
21
48°
24°
22
47°
26°
23
36°
32°
24
45°
29°
25
47°
28°
26
42°
28°
27
37°
18°
28
38°
16°
29
29°
14°
30
32°
10°
31
31°
12°
1
24°
14°
2
29°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mansfield
Mansfield's December 2026 forecast shows daily high temperatures ranging from 24° to 52°, with overnight lows between 10° and 39°. The average high for December is 38° with an average low of 25°. 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 Mansfield. See also: January | February | March.