S
M
T
W
T
F
S
26
84°
67°
27
89°
70°
28
88°
70°
29
88°
69°
30
87°
69°
31
83°
67°
1
85°
69°
2
82°
69°
3
82°
67°
4
83°
68°
5
85°
67°
6
84°
68°
7
84°
67°
8
83°
66°
9
83°
68°
10
81°
68°
11
82°
67°
12
81°
66°
13
81°
65°
14
82°
64°
15
81°
65°
16
81°
62°
17
80°
63°
18
81°
64°
19
81°
64°
20
84°
66°
21
87°
61°
22
81°
60°
23
80°
59°
24
81°
61°
25
80°
63°
26
81°
66°
27
86°
66°
28
82°
67°
29
86°
67°
30
87°
60°
31
80°
59°
1
79°
60°
2
79°
63°
3
80°
60°
4
82°
66°
5
85°
65°
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 79° to 89°, with overnight lows between 59° and 70°. The average high for August is 83° with an average low of 65°. 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.
