S
M
T
W
T
F
S
26
55°
36°
27
65°
34°
28
66°
35°
29
N/A
30
53°
40°
1
62°
41°
2
55°
44°
3
57°
38°
4
59°
50°
5
64°
49°
6
63°
56°
7
64°
47°
8
62°
46°
9
60°
49°
10
61°
48°
11
61°
46°
12
64°
50°
13
62°
49°
14
61°
47°
15
62°
52°
16
62°
51°
17
63°
49°
18
62°
55°
19
65°
55°
20
65°
54°
21
66°
55°
22
70°
51°
23
62°
52°
24
64°
55°
25
66°
52°
26
64°
54°
27
64°
53°
28
65°
57°
29
68°
57°
30
69°
56°
31
66°
55°
1
66°
51°
2
65°
51°
3
66°
52°
4
66°
52°
5
67°
53°
6
66°
53°
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 53° to 70°, with overnight lows between 38° and 57°. The average high for May is 63° with an average low of 51°. 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.