S
M
T
W
T
F
S
29
63°
34°
30
78°
35°
31
69°
39°
1
41°
32°
2
57°
32°
3
45°
35°
4
46°
36°
5
52°
33°
6
47°
28°
7
41°
20°
8
68°
30°
9
61°
41°
10
53°
34°
11
54°
29°
12
72°
46°
13
73°
59°
14
77°
56°
15
68°
59°
16
69°
52°
17
77°
52°
18
45°
32°
19
48°
35°
20
53°
31°
21
75°
44°
22
70°
39°
23
80°
50°
24
71°
51°
25
68°
45°
26
61°
44°
27
66°
45°
28
64°
49°
29
55°
41°
30
53°
35°
1
46°
31°
2
55°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Oconomowoc
Oconomowoc's April 2026 forecast shows daily high temperatures ranging from 46° to 55°, with overnight lows between 31° and 39°. The average high for April is 51° with an average low of 35°. 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 Oconomowoc. See also: May | June | July.