S
M
T
W
T
F
S
29
45°
36°
30
46°
40°
1
47°
38°
2
46°
35°
3
40°
32°
4
38°
30°
5
39°
29°
6
38°
28°
7
37°
30°
8
38°
33°
9
40°
30°
10
37°
26°
11
35°
26°
12
35°
27°
13
36°
26°
14
36°
27°
15
38°
31°
16
41°
36°
17
42°
35°
18
42°
29°
19
37°
30°
20
38°
34°
21
45°
35°
22
44°
35°
23
44°
34°
24
41°
38°
25
44°
36°
26
46°
36°
27
45°
35°
28
45°
35°
29
43°
36°
30
46°
34°
31
45°
34°
1
44°
33°
2
43°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Achern
Achern's December 2026 forecast shows daily high temperatures ranging from 35° to 47°, with overnight lows between 26° and 40°. The average high for December is 41° with an average low of 32°. 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 Achern. See also: January | February | March.
