S
M
T
W
T
F
S
31
68°
48°
1
57°
39°
2
67°
36°
3
76°
47°
4
72°
56°
5
83°
56°
6
75°
57°
7
81°
58°
8
72°
54°
9
77°
57°
10
76°
60°
11
80°
64°
12
84°
65°
13
83°
65°
14
83°
59°
15
79°
67°
16
74°
62°
17
74°
56°
18
73°
63°
19
79°
64°
20
80°
59°
21
80°
58°
22
77°
65°
23
71°
60°
24
79°
60°
25
76°
61°
26
74°
63°
27
79°
63°
28
78°
64°
29
77°
65°
30
79°
65°
1
79°
66°
2
81°
65°
3
79°
62°
4
73°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Barnstable
Barnstable's June 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 58° and 66°. The average high for June is 77° with an average low of 63°. 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 Barnstable. See also: July | August | September.