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°
55°
8
74°
58°
9
87°
64°
10
89°
66°
11
84°
66°
12
85°
68°
13
82°
66°
14
81°
67°
15
78°
65°
16
74°
62°
17
76°
64°
18
78°
63°
19
76°
64°
20
79°
61°
21
77°
63°
22
76°
65°
23
74°
62°
24
73°
61°
25
74°
63°
26
77°
62°
27
76°
67°
28
80°
65°
29
76°
62°
30
75°
62°
1
76°
65°
2
78°
65°
3
77°
63°
4
77°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Downtown Boston
Downtown Boston's June 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 55° and 68°. The average high for June is 78° with an average low of 64°. 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 Downtown Boston. See also: July | August | September.
