S
M
T
W
T
F
S
31
66°
41°
1
60°
45°
2
72°
48°
3
80°
54°
4
82°
57°
5
84°
61°
6
81°
64°
7
75°
56°
8
75°
53°
9
80°
56°
10
84°
60°
11
89°
66°
12
88°
72°
13
83°
66°
14
85°
60°
15
74°
57°
16
73°
52°
17
77°
53°
18
78°
58°
19
75°
60°
20
74°
58°
21
77°
56°
22
70°
56°
23
67°
59°
24
77°
61°
25
78°
59°
26
76°
62°
27
79°
63°
28
84°
60°
29
86°
63°
30
90°
68°
1
95°
76°
2
99°
77°
3
97°
69°
4
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Westborough
Westborough's June 2026 forecast shows daily high temperatures ranging from 84° to 99°, with overnight lows between 60° and 77°. The average high for June is 91° 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 June weather will actually feel in Westborough. See also: July | August | September.