S
M
T
W
T
F
S
29
41°
38°
30
48°
34°
1
46°
32°
2
46°
33°
3
47°
32°
4
46°
31°
5
43°
32°
6
44°
31°
7
42°
33°
8
43°
38°
9
41°
38°
10
45°
39°
11
47°
39°
12
40°
38°
13
41°
30°
14
44°
31°
15
39°
38°
16
Hist. Avg.
42°
36°
17
Hist. Avg.
42°
36°
18
Hist. Avg.
42°
36°
19
Hist. Avg.
42°
36°
20
Hist. Avg.
42°
36°
21
Hist. Avg.
41°
36°
22
Hist. Avg.
41°
35°
23
Hist. Avg.
41°
35°
24
Hist. Avg.
41°
35°
25
Hist. Avg.
41°
35°
26
Hist. Avg.
41°
35°
27
Hist. Avg.
41°
35°
28
Hist. Avg.
41°
35°
29
Hist. Avg.
41°
35°
30
Hist. Avg.
41°
35°
31
Hist. Avg.
41°
35°
1
Hist. Avg.
40°
34°
2
Hist. Avg.
40°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Aachen
Aachen's December 2026 forecast shows daily high temperatures ranging from 39° to 48°, with overnight lows between 30° and 39°. The average high for December is 44° with an average low of 35°. 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 Aachen. See also: January | February | March.
