S
M
T
W
T
F
S
29
40°
25°
30
40°
25°
1
39°
26°
2
40°
16°
3
37°
9°
4
36°
15°
5
28°
25°
6
36°
26°
7
39°
28°
8
42°
25°
9
26°
14°
10
41°
26°
11
43°
23°
12
Hist. Avg.
34°
18°
13
Hist. Avg.
34°
18°
14
Hist. Avg.
33°
18°
15
Hist. Avg.
33°
18°
16
Hist. Avg.
32°
17°
17
Hist. Avg.
32°
17°
18
Hist. Avg.
32°
17°
19
Hist. Avg.
32°
16°
20
Hist. Avg.
31°
16°
21
Hist. Avg.
31°
16°
22
Hist. Avg.
31°
16°
23
Hist. Avg.
30°
15°
24
Hist. Avg.
30°
15°
25
Hist. Avg.
30°
15°
26
Hist. Avg.
30°
14°
27
Hist. Avg.
30°
14°
28
Hist. Avg.
29°
14°
29
Hist. Avg.
29°
14°
30
Hist. Avg.
29°
13°
31
Hist. Avg.
29°
13°
1
Hist. Avg.
28°
13°
2
Hist. Avg.
28°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Postville
Postville's December 2026 forecast shows daily high temperatures ranging from 26° to 43°, with overnight lows between 9° and 28°. The average high for December is 37° with an average low of 22°. 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 Postville. See also: January | February | March.
