S
M
T
W
T
F
S
31
70°
32°
1
62°
40°
2
77°
46°
3
80°
53°
4
87°
58°
5
88°
65°
6
85°
60°
7
67°
49°
8
67°
51°
9
73°
54°
10
75°
56°
11
80°
58°
12
76°
57°
13
78°
58°
14
79°
59°
15
80°
55°
16
73°
51°
17
73°
53°
18
75°
55°
19
76°
55°
20
75°
54°
21
75°
54°
22
76°
55°
23
75°
55°
24
76°
61°
25
76°
58°
26
77°
56°
27
77°
62°
28
81°
61°
29
78°
58°
30
77°
56°
1
76°
57°
2
77°
59°
3
79°
63°
4
80°
63°
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 67° to 88°, with overnight lows between 46° and 65°. The average high for June is 77° with an average low of 57°. 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.