S
M
T
W
T
F
S
26
61°
52°
27
62°
49°
28
65°
46°
29
64°
46°
30
64°
50°
1
64°
56°
2
64°
56°
3
62°
54°
4
64°
53°
5
62°
50°
6
64°
49°
7
61°
50°
8
63°
58°
9
64°
58°
10
64°
54°
11
63°
56°
12
63°
55°
13
66°
53°
14
64°
52°
15
64°
58°
16
64°
57°
17
66°
57°
18
64°
53°
19
72°
50°
20
77°
54°
21
67°
55°
22
63°
58°
23
64°
58°
24
64°
54°
25
64°
51°
26
63°
56°
27
62°
54°
28
69°
55°
29
70°
54°
30
73°
58°
31
74°
58°
1
73°
58°
2
76°
58°
3
76°
58°
4
75°
60°
5
76°
61°
6
73°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Juan Capistrano
San Juan Capistrano's May 2026 forecast shows daily high temperatures ranging from 69° to 76°, with overnight lows between 54° and 61°. The average high for May is 74° with an average low of 58°. 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 San Juan Capistrano. See also: June | July | August.
