S
M
T
W
T
F
S
26
55°
31°
27
57°
34°
28
58°
34°
29
57°
38°
30
54°
39°
1
58°
45°
2
61°
42°
3
59°
39°
4
57°
38°
5
58°
36°
6
63°
39°
7
57°
40°
8
59°
39°
9
58°
41°
10
58°
40°
11
59°
39°
12
58°
38°
13
58°
37°
14
59°
36°
15
59°
36°
16
57°
40°
17
59°
40°
18
60°
39°
19
60°
40°
20
63°
40°
21
62°
41°
22
62°
41°
23
64°
45°
24
65°
46°
25
68°
47°
26
66°
46°
27
64°
45°
28
64°
45°
29
71°
47°
30
68°
46°
31
66°
46°
1
65°
48°
2
66°
48°
3
68°
47°
4
73°
48°
5
69°
42°
6
67°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Williams
Port Williams's May 2026 forecast shows daily high temperatures ranging from 54° to 73°, with overnight lows between 31° and 48°. The average high for May is 62° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Port Williams. See also: June | July | August.
