S
M
T
W
T
F
S
31
70°
41°
1
61°
39°
2
74°
37°
3
79°
43°
4
80°
49°
5
87°
51°
6
81°
55°
7
82°
58°
8
76°
50°
9
79°
51°
10
81°
56°
11
88°
63°
12
88°
67°
13
88°
62°
14
85°
57°
15
82°
63°
16
76°
54°
17
78°
52°
18
74°
57°
19
80°
63°
20
79°
57°
21
83°
52°
22
78°
52°
23
71°
64°
24
81°
57°
25
79°
64°
26
74°
64°
27
72°
58°
28
81°
61°
29
84°
62°
30
83°
64°
1
82°
62°
2
85°
66°
3
81°
64°
4
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mattapoisett
Mattapoisett's June 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 57° and 66°. The average high for June is 80° 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 Mattapoisett. See also: July | August | September.