S
M
T
W
T
F
S
26
55°
37°
27
67°
40°
28
65°
46°
29
60°
50°
30
56°
44°
1
57°
42°
2
54°
41°
3
55°
42°
4
58°
48°
5
60°
49°
6
62°
49°
7
65°
47°
8
63°
48°
9
61°
50°
10
60°
48°
11
60°
45°
12
61°
49°
13
61°
50°
14
62°
48°
15
60°
46°
16
60°
47°
17
58°
46°
18
60°
46°
19
63°
54°
20
64°
50°
21
62°
48°
22
62°
48°
23
63°
48°
24
62°
51°
25
64°
56°
26
67°
53°
27
63°
51°
28
63°
50°
29
65°
56°
30
71°
58°
31
72°
55°
1
68°
56°
2
72°
59°
3
74°
59°
4
73°
58°
5
73°
55°
6
67°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Westerly
Westerly's May 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 37° and 59°. The average high for May is 63° 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 Westerly. See also: June | July | August.