S
M
T
W
T
F
S
31
78°
56°
1
76°
62°
2
78°
56°
3
80°
56°
4
82°
58°
5
84°
68°
6
84°
69°
7
81°
68°
8
84°
70°
9
82°
70°
10
83°
69°
11
87°
70°
12
86°
71°
13
87°
69°
14
88°
68°
15
81°
65°
16
79°
62°
17
78°
64°
18
82°
63°
19
81°
69°
20
87°
68°
21
87°
63°
22
80°
61°
23
80°
62°
24
87°
69°
25
88°
69°
26
88°
68°
27
83°
64°
28
84°
68°
29
83°
69°
30
84°
68°
1
84°
69°
2
83°
65°
3
84°
64°
4
85°
65°
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 78° to 88°, with overnight lows between 61° and 71°. The average high for June is 84° with an average low of 67°. 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.