S
M
T
W
T
F
S
28
25°
16°
29
31°
15°
30
30°
17°
31
29°
18°
1
30°
18°
2
27°
18°
3
19°
17°
4
20°
17°
5
19°
11°
6
18°
4°
7
19°
2°
8
19°
-2°
9
24°
-2°
10
20°
-1°
11
1°
-5°
12
20°
-5°
13
29°
16°
14
32°
10°
15
31°
9°
16
34°
24°
17
33°
31°
18
34°
32°
19
32°
29°
20
29°
24°
21
29°
24°
22
29°
23°
23
23°
22°
24
23°
21°
25
24°
15°
26
17°
0°
27
19°
10°
28
19°
14°
29
16°
1°
30
21°
13°
31
22°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Oslo
Oslo'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 Oslo. See also: February | March | April.
