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