S
M
T
W
T
F
S
26
62°
50°
27
63°
50°
28
64°
53°
29
66°
57°
30
63°
54°
1
63°
51°
2
62°
51°
3
62°
52°
4
63°
51°
5
66°
55°
6
70°
58°
7
71°
59°
8
71°
59°
9
70°
58°
10
71°
58°
11
70°
57°
12
67°
55°
13
65°
53°
14
69°
57°
15
71°
59°
16
71°
56°
17
64°
54°
18
64°
53°
19
65°
56°
20
70°
57°
21
68°
56°
22
65°
54°
23
64°
55°
24
65°
58°
25
66°
54°
26
66°
55°
27
68°
58°
28
69°
60°
29
70°
60°
30
71°
61°
31
72°
61°
1
72°
62°
2
71°
61°
3
71°
61°
4
70°
60°
5
71°
61°
6
71°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South San Diego
South San Diego's May 2026 forecast shows daily high temperatures ranging from 62° to 72°, with overnight lows between 50° and 62°. The average high for May is 67° with an average low of 56°. 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 South San Diego. See also: June | July | August.
