S
M
T
W
T
F
S
26
79°
66°
27
83°
61°
28
87°
62°
29
91°
65°
30
93°
66°
1
90°
68°
2
94°
71°
3
98°
77°
4
80°
72°
5
80°
66°
6
86°
62°
7
98°
69°
8
102°
75°
9
104°
74°
10
107°
76°
11
111°
78°
12
105°
79°
13
100°
76°
14
102°
75°
15
100°
73°
16
100°
74°
17
100°
75°
18
95°
73°
19
95°
74°
20
96°
70°
21
90°
66°
22
89°
66°
23
90°
67°
24
91°
68°
25
96°
70°
26
100°
75°
27
97°
72°
28
94°
70°
29
94°
68°
30
96°
77°
31
98°
77°
1
94°
75°
2
95°
77°
3
99°
78°
4
97°
74°
5
95°
70°
6
94°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Phoenix
Phoenix's May 2026 forecast shows daily high temperatures ranging from 89° to 111°, with overnight lows between 66° and 79°. The average high for May is 98° with an average low of 73°. 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 Phoenix. See also: June | July | August.
