S
M
T
W
T
F
S
26
84°
61°
27
84°
56°
28
83°
56°
29
78°
58°
30
79°
59°
31
80°
56°
1
77°
55°
2
80°
60°
3
79°
56°
4
78°
55°
5
79°
56°
6
78°
55°
7
76°
56°
8
76°
55°
9
77°
56°
10
78°
61°
11
78°
56°
12
82°
58°
13
81°
57°
14
79°
59°
15
80°
61°
16
82°
60°
17
83°
61°
18
82°
55°
19
82°
54°
20
76°
55°
21
77°
60°
22
79°
58°
23
75°
59°
24
81°
60°
25
80°
59°
26
81°
59°
27
80°
54°
28
79°
54°
29
75°
59°
30
76°
55°
31
80°
51°
1
Hist. Avg.
74°
54°
2
Hist. Avg.
74°
53°
3
Hist. Avg.
74°
53°
4
Hist. Avg.
73°
53°
5
Hist. Avg.
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bar Harbor Town
Bar Harbor Town's August 2026 forecast shows daily high temperatures ranging from 75° to 84°, with overnight lows between 51° and 61°. The average high for August is 79° with an average low of 57°. 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 Bar Harbor Town. See also: September | October | November.