S
M
T
W
T
F
S
26
64°
52°
27
68°
50°
28
72°
46°
29
73°
48°
30
70°
52°
1
75°
55°
2
73°
57°
3
70°
52°
4
67°
48°
5
67°
46°
6
74°
51°
7
76°
54°
8
79°
55°
9
81°
56°
10
78°
58°
11
81°
57°
12
82°
59°
13
79°
56°
14
77°
57°
15
77°
56°
16
75°
55°
17
77°
57°
18
78°
58°
19
78°
58°
20
77°
57°
21
78°
58°
22
78°
58°
23
79°
59°
24
79°
59°
25
78°
58°
26
78°
58°
27
77°
57°
28
72°
56°
29
71°
55°
30
72°
56°
31
73°
57°
1
74°
58°
2
76°
57°
3
75°
57°
4
74°
56°
5
74°
57°
6
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Luis Rey Heights
San Luis Rey Heights's May 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 46° and 59°. The average high for May is 76° 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 San Luis Rey Heights. See also: June | July | August.
