S
M
T
W
T
F
S
31
74°
44°
1
75°
44°
2
78°
49°
3
81°
47°
4
83°
49°
5
82°
55°
6
80°
62°
7
77°
55°
8
83°
56°
9
82°
63°
10
83°
70°
11
82°
70°
12
77°
65°
13
81°
61°
14
72°
53°
15
70°
50°
16
72°
50°
17
71°
55°
18
71°
58°
19
73°
53°
20
71°
50°
21
74°
50°
22
73°
57°
23
75°
50°
24
75°
50°
25
71°
56°
26
74°
55°
27
79°
53°
28
83°
59°
29
84°
70°
30
92°
76°
1
95°
73°
2
95°
72°
3
88°
68°
4
86°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Dorchester
Dorchester's June 2026 forecast shows daily high temperatures ranging from 84° to 95°, with overnight lows between 68° and 76°. The average high for June is 90° with an average low of 71°. 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 Dorchester. See also: July | August | September.