S
M
T
W
T
F
S
31
70°
32°
1
62°
40°
2
76°
37°
3
83°
42°
4
88°
47°
5
88°
49°
6
87°
54°
7
81°
59°
8
78°
54°
9
87°
58°
10
85°
67°
11
90°
70°
12
87°
64°
13
82°
61°
14
83°
62°
15
81°
59°
16
82°
60°
17
79°
59°
18
74°
58°
19
78°
59°
20
81°
62°
21
79°
59°
22
78°
60°
23
76°
57°
24
75°
56°
25
76°
59°
26
78°
57°
27
77°
62°
28
82°
61°
29
78°
58°
30
77°
57°
1
78°
60°
2
80°
60°
3
79°
59°
4
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Holliston
Holliston's June 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 54° and 70°. The average high for June is 80° 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 June weather will actually feel in Holliston. See also: July | August | September.