S
M
T
W
T
F
S
26
82°
68°
27
87°
68°
28
87°
69°
29
88°
68°
30
87°
67°
31
84°
66°
1
83°
67°
2
86°
68°
3
87°
68°
4
88°
67°
5
89°
69°
6
89°
68°
7
84°
61°
8
87°
64°
9
87°
60°
10
83°
58°
11
81°
58°
12
82°
60°
13
82°
60°
14
84°
62°
15
82°
64°
16
82°
65°
17
83°
60°
18
84°
63°
19
84°
64°
20
81°
64°
21
82°
63°
22
81°
62°
23
83°
58°
24
84°
63°
25
87°
64°
26
88°
64°
27
88°
61°
28
87°
59°
29
85°
61°
30
82°
62°
31
84°
60°
1
79°
56°
2
79°
56°
3
78°
54°
4
78°
53°
5
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Port William
Port William's August 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 53° and 69°. 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 Port William. See also: September | October | November.
