S
M
T
W
T
F
S
29
46°
33°
30
50°
32°
1
46°
32°
2
43°
31°
3
43°
32°
4
42°
28°
5
40°
27°
6
40°
30°
7
41°
30°
8
38°
29°
9
39°
30°
10
45°
31°
11
45°
30°
12
39°
27°
13
36°
25°
14
32°
23°
15
33°
28°
16
38°
29°
17
43°
30°
18
45°
29°
19
43°
28°
20
39°
25°
21
34°
21°
22
33°
25°
23
40°
28°
24
41°
28°
25
31°
15°
26
31°
18°
27
34°
22°
28
35°
19°
29
32°
18°
30
33°
19°
31
33°
12°
1
31°
10°
2
28°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sheldon
Sheldon's December 2026 forecast shows daily high temperatures ranging from 28° to 50°, with overnight lows between 10° and 33°. 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 Sheldon. See also: January | February | March.