S
M
T
W
T
F
S
31
64°
34°
1
59°
42°
2
69°
48°
3
73°
52°
4
75°
52°
5
79°
59°
6
78°
57°
7
72°
53°
8
71°
54°
9
70°
52°
10
71°
54°
11
72°
55°
12
73°
54°
13
69°
52°
14
68°
50°
15
68°
49°
16
66°
50°
17
68°
52°
18
69°
54°
19
70°
54°
20
69°
52°
21
70°
53°
22
70°
53°
23
71°
54°
24
69°
59°
25
70°
59°
26
72°
57°
27
72°
59°
28
73°
58°
29
71°
56°
30
72°
55°
1
71°
54°
2
72°
58°
3
74°
61°
4
75°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Harpswell
Harpswell's June 2026 forecast shows daily high temperatures ranging from 59° to 79°, with overnight lows between 42° and 61°. The average high for June is 71° with an average low of 54°. 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 Harpswell. See also: July | August | September.