S
M
T
W
T
F
S
31
67°
45°
1
55°
43°
2
63°
41°
3
74°
51°
4
69°
58°
5
81°
58°
6
69°
61°
7
78°
57°
8
67°
57°
9
77°
59°
10
74°
62°
11
73°
63°
12
72°
63°
13
75°
64°
14
77°
63°
15
74°
65°
16
75°
63°
17
75°
63°
18
71°
62°
19
73°
63°
20
72°
64°
21
75°
61°
22
70°
62°
23
70°
59°
24
68°
59°
25
69°
61°
26
70°
60°
27
70°
64°
28
73°
63°
29
71°
61°
30
70°
60°
1
71°
64°
2
73°
64°
3
72°
63°
4
73°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Harwich
Harwich's June 2026 forecast shows daily high temperatures ranging from 67° to 77°, with overnight lows between 57° and 65°. The average high for June is 72° with an average low of 62°. 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 Harwich. See also: July | August | September.