S
M
T
W
T
F
S
28
80°
61°
29
80°
60°
30
76°
58°
1
83°
63°
2
84°
54°
3
80°
54°
4
77°
58°
5
79°
61°
6
84°
63°
7
85°
57°
8
82°
63°
9
80°
58°
10
85°
57°
11
83°
56°
12
78°
55°
13
77°
56°
14
79°
61°
15
82°
65°
16
78°
63°
17
85°
63°
18
Hist. Avg.
80°
62°
19
Hist. Avg.
80°
62°
20
Hist. Avg.
80°
62°
21
Hist. Avg.
80°
62°
22
Hist. Avg.
80°
62°
23
Hist. Avg.
80°
62°
24
Hist. Avg.
80°
62°
25
Hist. Avg.
80°
62°
26
Hist. Avg.
80°
62°
27
Hist. Avg.
80°
62°
28
Hist. Avg.
80°
62°
29
Hist. Avg.
80°
62°
30
Hist. Avg.
80°
62°
31
Hist. Avg.
80°
62°
1
Hist. Avg.
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Westborough
Westborough's July 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 54° and 65°. The average high for July is 81° with an average low of 59°. 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 Westborough. See also: August | September | October.