S
M
T
W
T
F
S
31
67°
58°
1
67°
57°
2
68°
56°
3
67°
54°
4
66°
53°
5
67°
58°
6
68°
58°
7
69°
61°
8
76°
61°
9
71°
60°
10
74°
56°
11
69°
54°
12
70°
57°
13
71°
62°
14
71°
55°
15
70°
55°
16
70°
56°
17
71°
56°
18
72°
61°
19
74°
64°
20
79°
64°
21
75°
63°
22
74°
61°
23
75°
66°
24
81°
66°
25
80°
65°
26
77°
61°
27
77°
61°
28
78°
65°
29
80°
60°
30
77°
61°
1
78°
63°
2
81°
67°
3
79°
68°
4
84°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Boston
Boston's June 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 53° and 68°. The average high for June is 74° with an average low of 60°. 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 Boston. See also: July | August | September.