S
M
T
W
T
F
S
26
82°
57°
27
81°
59°
28
80°
53°
29
80°
53°
30
81°
54°
1
82°
56°
2
83°
59°
3
89°
63°
4
88°
56°
5
81°
55°
6
82°
57°
7
84°
60°
8
87°
62°
9
89°
64°
10
91°
64°
11
92°
63°
12
93°
65°
13
93°
66°
14
90°
62°
15
85°
59°
16
86°
62°
17
90°
63°
18
93°
67°
19
94°
67°
20
92°
68°
21
95°
67°
22
91°
63°
23
93°
67°
24
98°
63°
25
97°
61°
26
91°
65°
27
96°
66°
28
100°
68°
29
101°
67°
30
100°
68°
31
101°
74°
1
103°
72°
2
104°
70°
3
103°
66°
4
98°
63°
5
93°
61°
6
91°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Why
Why's May 2026 forecast shows daily high temperatures ranging from 80° to 104°, with overnight lows between 53° and 74°. The average high for May is 91° with an average low of 63°. 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 Why. See also: June | July | August.