S
M
T
W
T
F
S
29
52°
31°
30
50°
34°
31
38°
30°
1
33°
25°
2
33°
29°
3
36°
30°
4
37°
31°
5
45°
30°
6
41°
20°
7
33°
19°
8
51°
27°
9
49°
36°
10
45°
31°
11
53°
32°
12
56°
51°
13
54°
41°
14
56°
41°
15
48°
40°
16
51°
40°
17
61°
45°
18
53°
29°
19
45°
28°
20
48°
35°
21
52°
40°
22
56°
39°
23
57°
36°
24
56°
37°
25
55°
34°
26
47°
33°
27
49°
34°
28
49°
35°
29
50°
31°
30
50°
32°
1
52°
31°
2
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Sister Bay
Sister Bay's April 2026 forecast shows daily high temperatures ranging from 45° to 61°, with overnight lows between 28° and 51°. The average high for April is 52° with an average low of 36°. 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 Sister Bay. See also: May | June | July.
