S
M
T
W
T
F
S
26
80°
63°
27
85°
55°
28
85°
60°
29
85°
64°
30
83°
57°
1
84°
64°
2
89°
67°
3
92°
67°
4
87°
61°
5
80°
52°
6
78°
54°
7
85°
57°
8
93°
62°
9
95°
62°
10
91°
61°
11
93°
63°
12
95°
68°
13
86°
64°
14
85°
59°
15
85°
60°
16
86°
61°
17
85°
61°
18
86°
62°
19
86°
64°
20
88°
63°
21
87°
66°
22
92°
69°
23
94°
68°
24
91°
64°
25
88°
64°
26
89°
68°
27
92°
69°
28
94°
70°
29
96°
71°
30
95°
73°
31
94°
72°
1
92°
70°
2
94°
70°
3
94°
72°
4
96°
73°
5
97°
72°
6
98°
74°
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 98°, with overnight lows between 52° and 74°. The average high for May is 90° with an average low of 65°. 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.
