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