S
M
T
W
T
F
S
26
80°
54°
27
83°
58°
28
86°
60°
29
88°
65°
30
83°
62°
1
84°
60°
2
79°
55°
3
80°
56°
4
80°
58°
5
84°
64°
6
89°
65°
7
91°
66°
8
92°
67°
9
91°
67°
10
92°
68°
11
92°
67°
12
91°
66°
13
88°
62°
14
84°
60°
15
86°
62°
16
88°
63°
17
87°
64°
18
85°
60°
19
85°
63°
20
89°
67°
21
95°
71°
22
94°
70°
23
91°
66°
24
90°
67°
25
91°
63°
26
93°
71°
27
96°
71°
28
97°
72°
29
99°
74°
30
101°
73°
31
102°
75°
1
104°
74°
2
104°
73°
3
100°
74°
4
102°
75°
5
103°
75°
6
101°
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 79° to 104°, with overnight lows between 54° and 75°. 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.
