S
M
T
W
T
F
S
26
29°
18°
27
46°
21°
28
57°
26°
29
60°
27°
30
69°
38°
1
72°
42°
2
61°
39°
3
71°
42°
4
60°
34°
5
60°
39°
6
76°
50°
7
75°
45°
8
68°
43°
9
59°
41°
10
66°
43°
11
67°
43°
12
69°
42°
13
67°
43°
14
64°
39°
15
61°
37°
16
64°
37°
17
67°
41°
18
67°
44°
19
59°
44°
20
59°
42°
21
63°
45°
22
60°
44°
23
60°
44°
24
62°
39°
25
68°
43°
26
70°
45°
27
70°
46°
28
60°
43°
29
59°
38°
30
62°
41°
31
64°
47°
1
62°
47°
2
62°
45°
3
68°
48°
4
64°
48°
5
62°
45°
6
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cranston
Cranston's May 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 34° and 50°. The average high for May is 65° with an average low of 43°. 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 Cranston. See also: June | July | August.