S
M
T
W
T
F
S
26
76°
63°
27
78°
63°
28
76°
62°
29
76°
63°
30
78°
64°
31
80°
63°
1
76°
63°
2
75°
62°
3
74°
63°
4
75°
63°
5
76°
62°
6
75°
63°
7
75°
63°
8
76°
62°
9
75°
63°
10
74°
63°
11
74°
62°
12
75°
59°
13
74°
60°
14
74°
62°
15
75°
62°
16
73°
61°
17
73°
62°
18
74°
62°
19
75°
61°
20
74°
62°
21
77°
56°
22
78°
56°
23
77°
53°
24
74°
55°
25
73°
59°
26
74°
54°
27
75°
52°
28
73°
55°
29
72°
58°
30
79°
52°
31
76°
52°
1
73°
54°
2
74°
59°
3
73°
53°
4
74°
58°
5
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Harpswell
Harpswell's August 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 52° and 64°. The average high for August is 75° with an average low of 60°. 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 Harpswell. See also: September | October | November.
