S
M
T
W
T
F
S
29
58°
32°
30
52°
25°
1
43°
23°
2
44°
29°
3
56°
30°
4
48°
30°
5
45°
28°
6
44°
24°
7
41°
21°
8
40°
24°
9
48°
29°
10
51°
29°
11
51°
28°
12
54°
29°
13
52°
29°
14
46°
24°
15
48°
23°
16
49°
19°
17
42°
14°
18
40°
13°
19
41°
14°
20
37°
18°
21
41°
21°
22
43°
17°
23
42°
19°
24
46°
17°
25
40°
20°
26
50°
25°
27
52°
25°
28
47°
20°
29
42°
21°
30
41°
14°
31
40°
13°
1
39°
19°
2
41°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Plains
Plains's December 2026 forecast shows daily high temperatures ranging from 37° to 58°, with overnight lows between 13° and 32°. The average high for December is 46° with an average low of 23°. 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 Plains. See also: January | February | March.
