S
M
T
W
T
F
S
29
42°
38°
30
41°
36°
1
46°
40°
2
46°
37°
3
50°
40°
4
49°
43°
5
52°
35°
6
52°
34°
7
42°
33°
8
41°
32°
9
41°
32°
10
42°
31°
11
43°
32°
12
39°
35°
13
39°
36°
14
44°
37°
15
43°
39°
16
49°
39°
17
50°
36°
18
48°
30°
19
44°
30°
20
39°
33°
21
38°
36°
22
40°
40°
23
48°
38°
24
48°
35°
25
47°
37°
26
41°
37°
27
45°
36°
28
45°
35°
29
44°
37°
30
46°
37°
31
47°
36°
1
46°
36°
2
46°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cologne
Cologne's December 2026 forecast shows daily high temperatures ranging from 38° to 52°, with overnight lows between 30° and 43°. The average high for December is 45° with an average low of 36°. 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.
