S
M
T
W
T
F
S
26
65°
37°
27
72°
31°
28
68°
35°
29
65°
34°
30
52°
45°
1
60°
38°
2
55°
39°
3
52°
33°
4
71°
36°
5
83°
44°
6
66°
48°
7
59°
36°
8
57°
30°
9
50°
30°
10
71°
44°
11
60°
38°
12
62°
32°
13
56°
39°
14
57°
50°
15
60°
46°
16
80°
45°
17
87°
54°
18
91°
54°
19
91°
63°
20
85°
51°
21
64°
36°
22
67°
45°
23
62°
47°
24
59°
45°
25
65°
49°
26
71°
51°
27
74°
50°
28
75°
50°
29
74°
48°
30
79°
49°
31
80°
53°
1
79°
48°
2
67°
48°
3
67°
47°
4
68°
51°
5
69°
52°
6
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Westport
Westport's May 2026 forecast shows daily high temperatures ranging from 59° to 91°, with overnight lows between 36° and 63°. The average high for May is 72° with an average low of 49°. 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 Westport. See also: June | July | August.
