S
M
T
W
T
F
S
31
74°
42°
1
77°
48°
2
77°
47°
3
77°
56°
4
72°
60°
5
75°
61°
6
76°
59°
7
77°
60°
8
76°
60°
9
75°
59°
10
77°
59°
11
76°
55°
12
73°
54°
13
74°
55°
14
70°
56°
15
69°
49°
16
69°
49°
17
70°
54°
18
76°
58°
19
79°
58°
20
79°
59°
21
77°
59°
22
77°
58°
23
76°
56°
24
71°
52°
25
72°
58°
26
79°
58°
27
73°
54°
28
72°
52°
29
72°
52°
30
73°
56°
1
78°
61°
2
79°
61°
3
78°
55°
4
73°
53°
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 69° to 79°, with overnight lows between 47° and 61°. The average high for June is 75° with an average low of 56°. 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.