S
M
T
W
T
F
S
26
84°
64°
27
85°
65°
28
84°
66°
29
80°
65°
30
79°
65°
31
84°
66°
1
85°
66°
2
83°
64°
3
87°
64°
4
86°
65°
5
85°
64°
6
84°
63°
7
79°
64°
8
80°
59°
9
79°
59°
10
80°
58°
11
79°
64°
12
83°
64°
13
85°
63°
14
84°
57°
15
80°
57°
16
78°
58°
17
80°
63°
18
77°
57°
19
81°
56°
20
80°
56°
21
81°
57°
22
82°
60°
23
83°
56°
24
82°
55°
25
80°
55°
26
81°
59°
27
78°
58°
28
76°
59°
29
82°
62°
30
82°
59°
31
81°
52°
1
78°
51°
2
74°
53°
3
74°
52°
4
75°
52°
5
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Westborough
Westborough's August 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 51° and 66°. The average high for August is 81° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Westborough. See also: September | October | November.
