S
M
T
W
T
F
S
28
41°
30°
29
31°
27°
30
35°
23°
31
37°
27°
1
34°
24°
2
24°
13°
3
13°
1°
4
11°
-1°
5
7°
1°
6
5°
0°
7
20°
-1°
8
24°
16°
9
29°
21°
10
28°
9°
11
32°
4°
12
31°
21°
13
35°
29°
14
38°
28°
15
40°
23°
16
44°
37°
17
41°
27°
18
28°
21°
19
43°
23°
20
33°
24°
21
34°
24°
22
32°
21°
23
26°
21°
24
25°
21°
25
22°
8°
26
14°
7°
27
14°
7°
28
19°
3°
29
9°
1°
30
25°
5°
31
27°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Trondheim
Trondheim's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January 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 January weather will actually feel in Trondheim. See also: February | March | April.