S
M
T
W
T
F
S
29
48°
30°
30
45°
22°
1
35°
15°
2
32°
14°
3
36°
27°
4
38°
28°
5
35°
27°
6
35°
21°
7
32°
18°
8
31°
21°
9
36°
19°
10
39°
26°
11
39°
26°
12
44°
23°
13
41°
26°
14
37°
24°
15
38°
23°
16
38°
21°
17
37°
15°
18
36°
13°
19
34°
8°
20
29°
8°
21
26°
21°
22
36°
20°
23
37°
16°
24
36°
7°
25
31°
20°
26
32°
23°
27
38°
21°
28
38°
21°
29
36°
14°
30
34°
15°
31
31°
4°
1
30°
2°
2
25°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Plattsmouth
Plattsmouth's December 2026 forecast shows daily high temperatures ranging from 25° to 48°, with overnight lows between 2° and 30°. The average high for December is 36° with an average low of 19°. 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 Plattsmouth. See also: January | February | March.
