S
M
T
W
T
F
S
29
66°
40°
30
78°
40°
31
60°
37°
1
45°
31°
2
40°
31°
3
43°
32°
4
43°
32°
5
54°
31°
6
46°
24°
7
43°
13°
8
70°
33°
9
60°
39°
10
54°
30°
11
54°
27°
12
75°
46°
13
73°
57°
14
78°
54°
15
70°
54°
16
73°
50°
17
78°
43°
18
43°
35°
19
48°
28°
20
55°
24°
21
76°
47°
22
77°
54°
23
79°
60°
24
67°
41°
25
65°
44°
26
64°
45°
27
61°
44°
28
58°
37°
29
59°
38°
30
56°
38°
1
60°
39°
2
61°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lake Wisconsin
Lake Wisconsin's April 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 37° and 60°. The average high for April is 65° with an average low of 44°. 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 Lake Wisconsin. See also: May | June | July.