S
M
T
W
T
F
S
31
68°
44°
1
58°
49°
2
75°
49°
3
80°
60°
4
89°
59°
5
88°
65°
6
87°
62°
7
82°
59°
8
74°
56°
9
86°
59°
10
89°
66°
11
91°
71°
12
87°
64°
13
83°
65°
14
89°
67°
15
82°
59°
16
75°
60°
17
77°
58°
18
78°
60°
19
76°
62°
20
79°
61°
21
77°
60°
22
75°
61°
23
76°
60°
24
77°
62°
25
79°
64°
26
78°
58°
27
77°
58°
28
77°
59°
29
78°
59°
30
78°
60°
1
77°
62°
2
79°
66°
3
80°
66°
4
82°
65°
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 75° to 91°, with overnight lows between 58° and 71°. 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 Dorchester. See also: July | August | September.