S
M
T
W
T
F
S
31
73°
42°
1
71°
45°
2
74°
45°
3
80°
48°
4
83°
51°
5
87°
53°
6
85°
66°
7
68°
62°
8
82°
53°
9
90°
59°
10
85°
70°
11
91°
69°
12
87°
65°
13
84°
62°
14
78°
61°
15
66°
54°
16
76°
52°
17
76°
57°
18
72°
54°
19
68°
53°
20
64°
49°
21
70°
53°
22
65°
52°
23
70°
51°
24
73°
52°
25
74°
56°
26
71°
57°
27
71°
55°
28
74°
58°
29
76°
58°
30
73°
56°
1
72°
54°
2
71°
58°
3
70°
56°
4
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Williamstown
Williamstown's June 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 49° and 58°. The average high for June is 71° with an average low of 54°. 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 Williamstown. See also: July | August | September.