S
M
T
W
T
F
S
26
79°
66°
27
83°
61°
28
87°
62°
29
91°
68°
30
92°
67°
1
91°
68°
2
95°
75°
3
97°
72°
4
88°
66°
5
83°
63°
6
84°
67°
7
90°
69°
8
96°
70°
9
95°
71°
10
95°
70°
11
97°
73°
12
93°
68°
13
90°
70°
14
89°
67°
15
89°
65°
16
88°
66°
17
88°
68°
18
89°
69°
19
90°
70°
20
90°
68°
21
91°
70°
22
96°
73°
23
98°
74°
24
96°
70°
25
92°
69°
26
94°
72°
27
97°
76°
28
98°
75°
29
100°
75°
30
98°
77°
31
97°
77°
1
97°
74°
2
98°
74°
3
97°
75°
4
100°
77°
5
100°
77°
6
101°
78°
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 83° to 101°, with overnight lows between 63° and 78°. The average high for May is 94° with an average low of 71°. 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.
