S
M
T
W
T
F
S
31
89°
67°
1
89°
70°
2
86°
67°
3
83°
64°
4
85°
64°
5
85°
70°
6
75°
68°
7
82°
70°
8
85°
66°
9
89°
69°
10
88°
75°
11
87°
72°
12
86°
69°
13
87°
66°
14
73°
65°
15
80°
64°
16
83°
60°
17
88°
72°
18
78°
64°
19
82°
64°
20
82°
72°
21
89°
64°
22
74°
62°
23
79°
62°
24
80°
63°
25
79°
63°
26
78°
63°
27
81°
67°
28
83°
66°
29
85°
67°
30
87°
67°
1
87°
69°
2
86°
67°
3
83°
71°
4
83°
70°
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 74° to 89°, with overnight lows between 62° and 72°. The average high for June is 82° with an average low of 66°. 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.
