S
M
T
W
T
F
S
29
31°
21°
30
34°
23°
1
35°
26°
2
34°
26°
3
36°
25°
4
36°
26°
5
37°
26°
6
39°
25°
7
38°
24°
8
35°
24°
9
37°
23°
10
36°
22°
11
36°
17°
12
32°
15°
13
29°
11°
14
31°
19°
15
33°
13°
16
32°
20°
17
35°
20°
18
36°
19°
19
35°
20°
20
35°
19°
21
36°
19°
22
35°
18°
23
35°
12°
24
34°
7°
25
28°
12°
26
24°
13°
27
26°
16°
28
29°
14°
29
35°
15°
30
32°
17°
31
33°
18°
1
34°
4°
2
35°
0°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mapleton
Mapleton's December 2026 forecast shows daily high temperatures ranging from 24° to 39°, with overnight lows between 0° and 26°. The average high for December is 34° with an average low of 18°. 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 Mapleton. See also: January | February | March.