S
M
T
W
T
F
S
28
82°
58°
29
86°
61°
30
90°
70°
1
96°
74°
2
103°
76°
3
100°
68°
4
91°
64°
5
86°
60°
6
83°
62°
7
88°
61°
8
85°
62°
9
89°
62°
10
84°
61°
11
88°
60°
12
80°
62°
13
81°
57°
14
79°
56°
15
79°
56°
16
80°
58°
17
81°
59°
18
81°
59°
19
82°
63°
20
84°
63°
21
85°
64°
22
87°
65°
23
87°
64°
24
86°
63°
25
87°
64°
26
88°
65°
27
89°
66°
28
88°
65°
29
88°
64°
30
87°
62°
31
80°
59°
1
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boxboro
Boxboro's July 2026 forecast shows daily high temperatures ranging from 79° to 103°, with overnight lows between 56° and 76°. The average high for July is 86° with an average low of 63°. 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 Boxboro. See also: August | September | October.