S
M
T
W
T
F
S
29
45°
41°
30
46°
41°
31
48°
43°
1
50°
39°
2
41°
36°
3
45°
39°
4
46°
41°
5
45°
36°
6
46°
39°
7
48°
41°
8
48°
45°
9
48°
45°
10
48°
43°
11
48°
45°
12
48°
45°
13
48°
46°
14
46°
45°
15
48°
45°
16
46°
46°
17
48°
46°
18
50°
46°
19
57°
45°
20
55°
43°
21
46°
43°
22
50°
41°
23
48°
46°
24
48°
43°
25
43°
39°
26
48°
41°
27
48°
41°
28
48°
45°
29
64°
38°
30
71°
41°
1
73°
43°
2
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Oslo
Oslo's April 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 38° and 44°. The average high for April is 68° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Oslo. See also: May | June | July.