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