S
M
T
W
T
F
S
31
78°
46°
1
74°
48°
2
77°
48°
3
80°
47°
4
83°
49°
5
85°
54°
6
83°
67°
7
87°
67°
8
87°
64°
9
84°
71°
10
86°
72°
11
89°
73°
12
84°
66°
13
84°
59°
14
82°
59°
15
72°
51°
16
77°
48°
17
81°
60°
18
79°
60°
19
79°
55°
20
81°
57°
21
81°
68°
22
75°
56°
23
77°
60°
24
78°
60°
25
81°
57°
26
80°
60°
27
83°
67°
28
85°
66°
29
84°
67°
30
81°
66°
1
84°
64°
2
81°
66°
3
84°
68°
4
82°
67°
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 75° to 85°, with overnight lows between 55° and 68°. The average high for June is 81° with an average low of 63°. 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.