S
M
T
W
T
F
S
26
92°
76°
27
86°
77°
28
88°
76°
29
85°
75°
30
89°
76°
1
87°
76°
2
90°
76°
3
88°
77°
4
88°
77°
5
88°
77°
6
89°
78°
7
87°
78°
8
86°
77°
9
87°
78°
10
87°
75°
11
86°
74°
12
86°
78°
13
87°
77°
14
87°
77°
15
86°
78°
16
84°
76°
17
85°
75°
18
85°
76°
19
86°
76°
20
85°
75°
21
85°
76°
22
86°
76°
23
85°
75°
24
86°
76°
25
86°
75°
26
85°
74°
27
85°
74°
28
86°
75°
29
85°
77°
30
87°
76°
31
86°
77°
1
86°
77°
2
87°
76°
3
86°
76°
4
86°
77°
5
87°
77°
6
86°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cataño
Cataño's May 2026 forecast shows daily high temperatures ranging from 84° to 89°, with overnight lows between 74° and 78°. The average high for May is 86° with an average low of 76°. 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 Cataño. See also: June | July | August.