S
M
T
W
T
F
S
26
64°
41°
27
57°
45°
28
57°
44°
29
64°
44°
30
69°
45°
1
68°
47°
2
74°
49°
3
78°
56°
4
78°
52°
5
69°
50°
6
65°
49°
7
62°
45°
8
61°
48°
9
67°
51°
10
69°
52°
11
68°
51°
12
68°
51°
13
68°
52°
14
70°
50°
15
70°
50°
16
60°
45°
17
58°
47°
18
56°
46°
19
56°
44°
20
57°
44°
21
64°
50°
22
62°
49°
23
59°
48°
24
64°
50°
25
64°
49°
26
62°
49°
27
65°
51°
28
66°
51°
29
65°
50°
30
66°
51°
31
67°
52°
1
66°
51°
2
65°
50°
3
66°
52°
4
65°
50°
5
64°
51°
6
62°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Washington
Port Washington's May 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 44° and 56°. The average high for May is 65° with an average low of 50°. 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 Washington. See also: June | July | August.
