S
M
T
W
T
F
S
26
74°
54°
27
62°
49°
28
55°
44°
29
65°
40°
30
72°
50°
31
70°
50°
1
58°
46°
2
64°
50°
3
61°
52°
4
58°
51°
5
56°
50°
6
56°
47°
7
55°
45°
8
56°
46°
9
55°
47°
10
55°
47°
11
55°
47°
12
56°
46°
13
53°
46°
14
59°
47°
15
57°
49°
16
58°
48°
17
57°
49°
18
57°
49°
19
58°
45°
20
55°
45°
21
55°
44°
22
54°
45°
23
55°
48°
24
56°
48°
25
56°
47°
26
55°
46°
27
55°
45°
28
56°
48°
29
57°
48°
30
55°
47°
31
54°
47°
1
55°
46°
2
54°
47°
3
54°
46°
4
53°
46°
5
54°
47°
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 53° to 64°, with overnight lows between 44° and 52°. The average high for August is 56° with an average low of 47°. 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.
