S
M
T
W
T
F
S
31
69°
45°
1
69°
48°
2
74°
48°
3
76°
54°
4
80°
58°
5
77°
58°
6
76°
56°
7
72°
50°
8
76°
54°
9
70°
60°
10
72°
56°
11
78°
57°
12
75°
56°
13
76°
53°
14
61°
47°
15
73°
46°
16
68°
51°
17
61°
50°
18
70°
52°
19
70°
52°
20
69°
53°
21
69°
51°
22
68°
53°
23
69°
56°
24
62°
57°
25
65°
53°
26
69°
56°
27
71°
56°
28
73°
63°
29
76°
62°
30
77°
61°
1
80°
62°
2
81°
62°
3
79°
60°
4
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Sister Bay
Sister Bay's June 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 53° and 63°. The average high for June is 73° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Sister Bay. See also: July | August | September.