S
M
T
W
T
F
S
26
65°
52°
27
67°
47°
28
73°
39°
29
74°
51°
30
68°
53°
1
64°
52°
2
58°
51°
3
66°
46°
4
76°
43°
5
78°
56°
6
83°
55°
7
74°
53°
8
71°
52°
9
76°
55°
10
83°
62°
11
81°
54°
12
70°
49°
13
77°
48°
14
78°
57°
15
75°
48°
16
81°
53°
17
89°
59°
18
89°
68°
19
88°
63°
20
88°
64°
21
87°
65°
22
76°
66°
23
85°
69°
24
80°
70°
25
81°
69°
26
83°
70°
27
85°
68°
28
81°
61°
29
78°
60°
30
72°
58°
31
75°
58°
1
82°
63°
2
84°
64°
3
84°
63°
4
83°
62°
5
82°
66°
6
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Perfection
Perfection's May 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 58° and 70°. The average high for May is 81° with an average low of 65°. 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 Perfection. See also: June | July | August.