S
M
T
W
T
F
S
26
79°
58°
27
78°
59°
28
79°
60°
29
75°
61°
30
79°
61°
1
79°
62°
2
83°
62°
3
83°
63°
4
81°
55°
5
75°
53°
6
74°
53°
7
76°
54°
8
77°
58°
9
82°
60°
10
81°
56°
11
78°
60°
12
84°
63°
13
85°
64°
14
85°
64°
15
84°
63°
16
80°
65°
17
81°
65°
18
86°
64°
19
86°
66°
20
81°
66°
21
80°
63°
22
80°
60°
23
81°
61°
24
82°
61°
25
86°
63°
26
85°
62°
27
88°
63°
28
89°
67°
29
90°
68°
30
89°
63°
31
89°
66°
1
90°
64°
2
90°
63°
3
85°
63°
4
84°
62°
5
84°
64°
6
83°
67°
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 74° to 90°, with overnight lows between 53° and 68°. The average high for May is 83° with an average low of 62°. 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.
