S
M
T
W
T
F
S
28
74°
61°
29
77°
61°
30
88°
70°
1
96°
74°
2
101°
77°
3
96°
72°
4
87°
69°
5
84°
65°
6
84°
65°
7
75°
66°
8
79°
67°
9
81°
69°
10
86°
66°
11
79°
69°
12
79°
68°
13
78°
63°
14
77°
63°
15
77°
64°
16
78°
64°
17
78°
65°
18
79°
64°
19
79°
68°
20
80°
68°
21
79°
70°
22
84°
70°
23
83°
69°
24
82°
70°
25
84°
70°
26
85°
71°
27
85°
71°
28
84°
70°
29
84°
71°
30
82°
69°
31
78°
67°
1
78°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Downtown Boston
Downtown Boston's July 2026 forecast shows daily high temperatures ranging from 74° to 101°, with overnight lows between 61° and 77°. The average high for July is 82° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Downtown Boston. See also: August | September | October.
