S
M
T
W
T
F
S
29
53°
39°
30
55°
38°
1
52°
35°
2
46°
33°
3
44°
32°
4
50°
34°
5
52°
36°
6
44°
33°
7
40°
25°
8
38°
23°
9
38°
25°
10
41°
29°
11
44°
32°
12
45°
30°
13
45°
29°
14
39°
22°
15
40°
27°
16
41°
31°
17
44°
29°
18
43°
25°
19
40°
20°
20
36°
19°
21
34°
19°
22
34°
25°
23
40°
27°
24
39°
26°
25
37°
18°
26
37°
16°
27
35°
17°
28
34°
17°
29
33°
20°
30
34°
22°
31
35°
17°
1
35°
13°
2
33°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Decker
Decker's December 2026 forecast shows daily high temperatures ranging from 33° to 55°, with overnight lows between 11° and 39°. The average high for December is 41° with an average low of 26°. 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 Decker. See also: January | February | March.
