S
M
T
W
T
F
S
31
64°
51°
1
66°
52°
2
66°
52°
3
67°
51°
4
66°
49°
5
67°
52°
6
67°
53°
7
68°
53°
8
68°
54°
9
69°
54°
10
73°
51°
11
68°
49°
12
69°
50°
13
70°
53°
14
70°
49°
15
68°
49°
16
69°
50°
17
71°
51°
18
71°
56°
19
72°
57°
20
75°
57°
21
71°
55°
22
71°
52°
23
72°
57°
24
77°
58°
25
75°
56°
26
74°
53°
27
75°
52°
28
75°
56°
29
78°
54°
30
76°
54°
1
77°
55°
2
77°
58°
3
80°
55°
4
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Bar Harbor
Bar Harbor's June 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 49° and 58°. The average high for June is 71° with an average low of 53°. 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 Bar Harbor. See also: July | August | September.