S
M
T
W
T
F
S
26
67°
46°
27
64°
42°
28
66°
42°
29
69°
46°
30
66°
42°
1
47°
36°
2
61°
34°
3
67°
42°
4
67°
50°
5
58°
40°
6
60°
38°
7
68°
35°
8
76°
48°
9
79°
57°
10
74°
48°
11
77°
44°
12
84°
56°
13
83°
63°
14
79°
61°
15
80°
55°
16
78°
57°
17
73°
54°
18
71°
51°
19
71°
50°
20
70°
49°
21
74°
48°
22
75°
53°
23
75°
51°
24
78°
55°
25
75°
48°
26
60°
46°
27
81°
46°
28
83°
50°
29
82°
48°
30
84°
48°
31
89°
50°
1
90°
53°
2
84°
50°
3
84°
49°
4
88°
52°
5
88°
52°
6
86°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santa Cruz
Santa Cruz's May 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 46° and 53°. The average high for May is 85° with an average low of 50°. 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 Santa Cruz. See also: June | July | August.