S
M
T
W
T
F
S
31
55°
36°
1
61°
37°
2
70°
42°
3
67°
46°
4
75°
50°
5
80°
50°
6
60°
51°
7
61°
48°
8
78°
43°
9
81°
49°
10
83°
54°
11
77°
56°
12
73°
55°
13
76°
54°
14
74°
53°
15
74°
59°
16
75°
55°
17
76°
50°
18
60°
50°
19
62°
55°
20
62°
51°
21
61°
54°
22
56°
55°
23
62°
55°
24
74°
54°
25
68°
55°
26
66°
55°
27
69°
57°
28
69°
58°
29
68°
59°
30
71°
58°
1
69°
59°
2
71°
56°
3
70°
60°
4
69°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Bass Harbor
Bass Harbor's June 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 51° and 60°. The average high for June is 67° with an average low of 56°. 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 Bass Harbor. See also: July | August | September.