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