S
M
T
W
T
F
S
28
90°
70°
29
89°
69°
30
89°
69°
1
90°
70°
2
90°
70°
3
91°
71°
4
93°
69°
5
93°
68°
6
91°
68°
7
90°
69°
8
91°
68°
9
92°
70°
10
94°
71°
11
93°
69°
12
92°
71°
13
91°
70°
14
91°
70°
15
92°
69°
16
95°
73°
17
95°
73°
18
Hist. Avg.
92°
72°
19
Hist. Avg.
92°
72°
20
Hist. Avg.
92°
72°
21
Hist. Avg.
92°
72°
22
Hist. Avg.
92°
72°
23
Hist. Avg.
92°
72°
24
Hist. Avg.
92°
72°
25
Hist. Avg.
92°
72°
26
Hist. Avg.
92°
72°
27
Hist. Avg.
92°
72°
28
Hist. Avg.
92°
72°
29
Hist. Avg.
92°
72°
30
Hist. Avg.
92°
72°
31
Hist. Avg.
92°
72°
1
Hist. Avg.
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Boston
Boston's July 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 68° and 73°. The average high for July is 92° with an average low of 70°. 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 Boston. See also: August | September | October.