S
M
T
W
T
F
S
26
75°
63°
27
76°
62°
28
77°
64°
29
73°
64°
30
73°
63°
31
75°
64°
1
78°
63°
2
78°
64°
3
79°
61°
4
79°
62°
5
77°
62°
6
78°
61°
7
77°
62°
8
76°
61°
9
76°
60°
10
78°
60°
11
77°
61°
12
77°
62°
13
78°
62°
14
78°
58°
15
73°
56°
16
72°
55°
17
75°
58°
18
71°
56°
19
75°
54°
20
74°
56°
21
72°
57°
22
75°
59°
23
76°
60°
24
77°
57°
25
76°
56°
26
75°
57°
27
76°
54°
28
69°
59°
29
75°
60°
30
76°
57°
31
75°
52°
1
75°
50°
2
68°
53°
3
68°
51°
4
69°
51°
5
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bass Harbor
Bass Harbor's August 2026 forecast shows daily high temperatures ranging from 68° to 79°, with overnight lows between 50° and 64°. The average high for August is 75° 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 August weather will actually feel in Bass Harbor. See also: September | October | November.
