S
M
T
W
T
F
S
26
88°
70°
27
89°
70°
28
88°
69°
29
89°
71°
30
90°
70°
31
88°
70°
1
83°
67°
2
82°
63°
3
82°
66°
4
81°
69°
5
82°
69°
6
83°
68°
7
83°
66°
8
84°
67°
9
83°
68°
10
85°
68°
11
85°
69°
12
86°
68°
13
88°
67°
14
91°
69°
15
91°
68°
16
86°
68°
17
83°
67°
18
87°
68°
19
83°
62°
20
83°
60°
21
82°
60°
22
81°
61°
23
82°
61°
24
82°
60°
25
83°
62°
26
82°
66°
27
86°
64°
28
86°
65°
29
86°
63°
30
87°
61°
31
82°
60°
1
80°
64°
2
82°
65°
3
81°
60°
4
81°
59°
5
82°
63°
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 91°, with overnight lows between 59° and 71°. The average high for August is 84° with an average low of 66°. 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.
