S
M
T
W
T
F
S
31
70°
53°
1
64°
48°
2
66°
52°
3
66°
56°
4
74°
61°
5
77°
63°
6
74°
60°
7
73°
60°
8
74°
62°
9
75°
63°
10
76°
65°
11
77°
58°
12
75°
61°
13
71°
60°
14
77°
62°
15
72°
59°
16
72°
60°
17
78°
63°
18
77°
59°
19
71°
58°
20
74°
62°
21
78°
61°
22
75°
64°
23
74°
65°
24
75°
66°
25
79°
65°
26
77°
61°
27
75°
60°
28
76°
64°
29
80°
67°
30
83°
67°
1
76°
66°
2
81°
68°
3
80°
66°
4
77°
64°
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 64° to 83°, with overnight lows between 48° and 68°. The average high for June is 75° with an average low of 61°. 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.
