S
M
T
W
T
F
S
29
46°
37°
30
46°
37°
31
50°
39°
1
54°
36°
2
50°
34°
3
50°
39°
4
50°
43°
5
55°
43°
6
48°
39°
7
55°
36°
8
55°
32°
9
52°
39°
10
50°
36°
11
54°
32°
12
57°
39°
13
50°
39°
14
54°
39°
15
55°
34°
16
61°
43°
17
57°
43°
18
59°
45°
19
54°
45°
20
52°
37°
21
55°
34°
22
61°
34°
23
61°
43°
24
N/A
25
50°
35°
26
56°
33°
27
52°
36°
28
58°
37°
29
58°
41°
30
60°
40°
1
63°
43°
2
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Flensburg
Flensburg's April 2026 forecast shows daily high temperatures ranging from 50° to 63°, with overnight lows between 33° and 44°. The average high for April is 57° with an average low of 39°. 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 Flensburg. See also: May | June | July.
