S
M
T
W
T
F
S
30
36°
27°
1
39°
28°
2
49°
30°
3
46°
31°
4
33°
29°
5
34°
26°
6
40°
32°
7
42°
36°
8
42°
31°
9
35°
31°
10
42°
32°
11
35°
29°
12
42°
33°
13
42°
29°
14
49°
29°
15
52°
34°
16
37°
28°
17
41°
23°
18
44°
28°
19
50°
34°
20
47°
42°
21
43°
33°
22
33°
26°
23
28°
22°
24
46°
22°
25
49°
44°
26
45°
40°
27
43°
33°
28
41°
30°
29
31°
27°
30
35°
23°
31
37°
27°
1
34°
24°
2
24°
13°
3
13°
1°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Trondheim
Trondheim'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 Trondheim. See also: January | February | March.
