S
M
T
W
T
F
S
26
90°
78°
27
92°
77°
28
92°
79°
29
91°
77°
30
90°
78°
1
92°
69°
2
74°
62°
3
84°
65°
4
87°
68°
5
90°
76°
6
96°
79°
7
91°
80°
8
92°
77°
9
91°
78°
10
93°
76°
11
91°
70°
12
91°
71°
13
92°
69°
14
92°
68°
15
92°
73°
16
93°
78°
17
92°
81°
18
95°
80°
19
94°
82°
20
92°
71°
21
88°
72°
22
95°
76°
23
84°
76°
24
89°
72°
25
88°
74°
26
89°
78°
27
90°
77°
28
94°
75°
29
95°
77°
30
97°
75°
31
91°
74°
1
90°
74°
2
89°
73°
3
91°
73°
4
90°
72°
5
94°
77°
6
90°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rancho Viejo
Rancho Viejo's May 2026 forecast shows daily high temperatures ranging from 84° to 97°, with overnight lows between 72° and 78°. The average high for May is 91° with an average low of 75°. 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 Rancho Viejo. See also: June | July | August.
