S
M
T
W
T
F
S
31
62°
36°
1
65°
43°
2
70°
38°
3
79°
41°
4
86°
52°
5
85°
57°
6
80°
61°
7
67°
45°
8
77°
47°
9
79°
54°
10
81°
58°
11
80°
57°
12
79°
56°
13
80°
58°
14
77°
54°
15
74°
55°
16
78°
56°
17
76°
51°
18
74°
55°
19
77°
53°
20
71°
50°
21
76°
48°
22
69°
48°
23
70°
49°
24
71°
56°
25
72°
58°
26
79°
50°
27
71°
49°
28
72°
50°
29
71°
50°
30
72°
51°
1
72°
50°
2
73°
52°
3
79°
57°
4
80°
58°
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 67° to 86°, with overnight lows between 45° and 61°. The average high for June is 76° with an average low of 53°. 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.