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