S
M
T
W
T
F
S
29
62°
37°
30
80°
38°
31
71°
38°
1
39°
33°
2
66°
33°
3
58°
36°
4
48°
37°
5
52°
35°
6
49°
27°
7
38°
22°
8
70°
32°
9
66°
44°
10
57°
32°
11
57°
48°
12
69°
57°
13
75°
60°
14
79°
57°
15
74°
52°
16
66°
48°
17
65°
44°
18
60°
45°
19
62°
46°
20
68°
46°
21
64°
45°
22
60°
38°
23
54°
43°
24
55°
44°
25
58°
40°
26
55°
35°
27
55°
36°
28
57°
45°
29
66°
48°
30
67°
47°
1
64°
44°
2
57°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Williams Bay
Williams Bay's April 2026 forecast shows daily high temperatures ranging from 54° to 79°, with overnight lows between 32° and 60°. The average high for April is 63° with an average low of 45°. 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 Williams Bay. See also: May | June | July.
