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