S
M
T
W
T
F
S
26
79°
61°
27
82°
48°
28
84°
52°
29
86°
61°
30
90°
63°
1
84°
58°
2
88°
67°
3
88°
66°
4
80°
54°
5
70°
47°
6
77°
43°
7
86°
50°
8
94°
54°
9
98°
53°
10
95°
54°
11
92°
54°
12
94°
53°
13
97°
54°
14
90°
51°
15
84°
47°
16
85°
48°
17
84°
48°
18
85°
49°
19
85°
50°
20
87°
49°
21
86°
52°
22
90°
55°
23
93°
54°
24
90°
50°
25
87°
49°
26
88°
54°
27
91°
56°
28
93°
55°
29
95°
56°
30
94°
58°
31
92°
58°
1
91°
55°
2
93°
55°
3
93°
57°
4
95°
58°
5
96°
58°
6
97°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Catalina
Catalina's May 2026 forecast shows daily high temperatures ranging from 70° to 98°, with overnight lows between 43° and 67°. The average high for May is 89° with an average low of 54°. 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 Catalina. See also: June | July | August.
