S
M
T
W
T
F
S
26
67°
55°
27
72°
52°
28
76°
55°
29
81°
60°
30
84°
63°
1
84°
62°
2
85°
61°
3
89°
59°
4
79°
63°
5
75°
57°
6
84°
59°
7
92°
63°
8
99°
67°
9
99°
72°
10
98°
73°
11
104°
72°
12
104°
74°
13
94°
73°
14
94°
72°
15
99°
70°
16
93°
70°
17
89°
61°
18
81°
59°
19
89°
65°
20
96°
69°
21
96°
70°
22
95°
72°
23
94°
69°
24
98°
71°
25
99°
72°
26
98°
71°
27
99°
72°
28
86°
62°
29
86°
63°
30
87°
63°
31
92°
65°
1
97°
66°
2
97°
70°
3
98°
74°
4
98°
65°
5
89°
66°
6
92°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Summerlin South
Summerlin South's May 2026 forecast shows daily high temperatures ranging from 81° to 99°, with overnight lows between 59° and 74°. The average high for May is 93° with an average low of 68°. 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 Summerlin South. See also: June | July | August.
