S
M
T
W
T
F
S
31
67°
45°
1
58°
40°
2
66°
51°
3
71°
52°
4
72°
58°
5
76°
61°
6
79°
60°
7
65°
55°
8
66°
57°
9
69°
58°
10
67°
58°
11
71°
59°
12
73°
60°
13
71°
61°
14
72°
58°
15
66°
54°
16
65°
54°
17
66°
56°
18
67°
59°
19
68°
58°
20
67°
58°
21
67°
59°
22
68°
56°
23
67°
57°
24
69°
63°
25
69°
61°
26
70°
59°
27
70°
63°
28
72°
64°
29
71°
61°
30
70°
59°
1
69°
59°
2
70°
63°
3
72°
65°
4
73°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in South Harwich
South Harwich's June 2026 forecast shows daily high temperatures ranging from 58° to 79°, with overnight lows between 40° and 65°. The average high for June is 69° with an average low of 58°. 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 South Harwich. See also: July | August | September.