S
M
T
W
T
F
S
28
75°
61°
29
78°
66°
30
89°
65°
1
92°
71°
2
101°
78°
3
100°
82°
4
94°
76°
5
79°
69°
6
73°
66°
7
69°
63°
8
77°
61°
9
93°
72°
10
89°
73°
11
77°
69°
12
77°
66°
13
86°
68°
14
94°
79°
15
93°
69°
16
91°
68°
17
85°
65°
18
81°
67°
19
83°
68°
20
82°
67°
21
84°
67°
22
80°
65°
23
78°
67°
24
82°
68°
25
82°
67°
26
83°
68°
27
79°
68°
28
78°
70°
29
79°
67°
30
78°
67°
31
79°
69°
1
79°
67°
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 78° to 94°, with overnight lows between 65° and 79°. The average high for July is 83° 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.
