S
M
T
W
T
F
S
26
78°
51°
27
83°
52°
28
85°
63°
29
82°
62°
30
80°
59°
1
81°
57°
2
89°
63°
3
91°
60°
4
88°
61°
5
92°
62°
6
94°
63°
7
93°
59°
8
99°
62°
9
92°
67°
10
91°
66°
11
92°
67°
12
92°
67°
13
91°
66°
14
92°
68°
15
93°
69°
16
93°
68°
17
94°
69°
18
94°
69°
19
91°
70°
20
89°
67°
21
86°
64°
22
85°
62°
23
86°
63°
24
87°
64°
25
89°
67°
26
90°
70°
27
91°
72°
28
92°
72°
29
96°
72°
30
97°
72°
31
95°
72°
1
95°
71°
2
96°
72°
3
97°
72°
4
96°
69°
5
93°
71°
6
94°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tucson
Tucson's May 2026 forecast shows daily high temperatures ranging from 78° to 99°, with overnight lows between 51° and 72°. The average high for May is 91° with an average low of 66°. 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 Tucson. See also: June | July | August.
