S
M
T
W
T
F
S
26
85°
68°
27
83°
62°
28
81°
62°
29
83°
63°
30
85°
66°
31
83°
63°
1
86°
68°
2
87°
65°
3
85°
63°
4
81°
62°
5
82°
65°
6
82°
65°
7
83°
62°
8
81°
62°
9
83°
67°
10
87°
67°
11
82°
66°
12
84°
67°
13
85°
67°
14
84°
66°
15
88°
67°
16
88°
60°
17
82°
63°
18
83°
66°
19
82°
61°
20
81°
59°
21
80°
60°
22
82°
60°
23
87°
63°
24
88°
65°
25
89°
64°
26
87°
59°
27
81°
58°
28
81°
58°
29
82°
59°
30
83°
61°
31
84°
63°
1
86°
64°
2
86°
62°
3
80°
61°
4
85°
63°
5
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Williamstown
Williamstown's August 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 58° and 68°. The average high for August is 84° 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 August weather will actually feel in Williamstown. See also: September | October | November.
