S
M
T
W
T
F
S
30
50°
41°
1
45°
37°
2
43°
37°
3
45°
41°
4
41°
37°
5
46°
37°
6
48°
41°
7
55°
46°
8
63°
50°
9
57°
50°
10
55°
46°
11
52°
41°
12
50°
39°
13
46°
43°
14
45°
41°
15
48°
39°
16
52°
43°
17
48°
36°
18
54°
43°
19
55°
46°
20
50°
43°
21
55°
41°
22
46°
37°
23
41°
39°
24
41°
25°
25
39°
19°
26
39°
23°
27
36°
21°
28
37°
21°
29
34°
19°
30
37°
27°
31
39°
27°
1
39°
36°
2
39°
32°
3
34°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cologne
Cologne's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Cologne. See also: January | February | March.
