S
M
T
W
T
F
S
26
80°
63°
27
85°
55°
28
87°
57°
29
85°
62°
30
92°
63°
1
87°
60°
2
91°
62°
3
94°
73°
4
84°
60°
5
79°
59°
6
78°
54°
7
87°
60°
8
93°
64°
9
97°
65°
10
102°
68°
11
105°
72°
12
99°
73°
13
95°
65°
14
96°
64°
15
98°
65°
16
97°
65°
17
95°
64°
18
94°
63°
19
102°
67°
20
86°
61°
21
85°
62°
22
86°
61°
23
87°
62°
24
88°
64°
25
93°
68°
26
96°
69°
27
93°
66°
28
91°
65°
29
91°
66°
30
93°
71°
31
93°
72°
1
91°
68°
2
91°
70°
3
94°
73°
4
93°
70°
5
92°
66°
6
93°
67°
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 105°, with overnight lows between 54° and 73°. The average high for May is 93° 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.
