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
97°
67°
8
101°
71°
9
105°
74°
10
106°
75°
11
109°
77°
12
108°
80°
13
101°
81°
14
101°
75°
15
98°
73°
16
100°
74°
17
96°
73°
18
87°
68°
19
92°
69°
20
95°
71°
21
98°
71°
22
98°
70°
23
97°
74°
24
100°
79°
25
101°
76°
26
100°
75°
27
99°
74°
28
100°
76°
29
100°
76°
30
100°
77°
31
103°
78°
1
101°
73°
2
103°
78°
3
104°
79°
4
104°
79°
5
105°
78°
6
104°
79°
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 92° to 105°, with overnight lows between 69° and 79°. The average high for May is 100° with an average low of 75°. 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.
