S
M
T
W
T
F
S
29
27°
17°
30
28°
17°
1
30°
23°
2
32°
23°
3
34°
22°
4
35°
23°
5
35°
23°
6
34°
22°
7
34°
21°
8
33°
21°
9
33°
19°
10
32°
18°
11
33°
16°
12
29°
16°
13
29°
9°
14
27°
13°
15
25°
11°
16
28°
15°
17
29°
15°
18
32°
14°
19
32°
15°
20
31°
13°
21
33°
14°
22
31°
14°
23
32°
11°
24
33°
7°
25
30°
7°
26
21°
8°
27
20°
11°
28
23°
10°
29
30°
8°
30
30°
12°
31
29°
12°
1
31°
4°
2
31°
-4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in New Post
New Post's December 2026 forecast shows daily high temperatures ranging from 20° to 35°, with overnight lows between -4° and 23°. The average high for December is 30° with an average low of 14°. 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 New Post. See also: January | February | March.