S
M
T
W
T
F
S
26
78°
53°
27
79°
55°
28
81°
54°
29
87°
58°
30
90°
59°
1
90°
60°
2
96°
61°
3
81°
60°
4
80°
58°
5
83°
62°
6
83°
56°
7
80°
56°
8
79°
57°
9
81°
59°
10
83°
59°
11
83°
60°
12
84°
61°
13
87°
63°
14
89°
65°
15
90°
64°
16
85°
59°
17
84°
60°
18
88°
64°
19
94°
69°
20
95°
70°
21
95°
70°
22
94°
69°
23
91°
67°
24
90°
67°
25
91°
69°
26
89°
65°
27
89°
63°
28
87°
63°
29
88°
64°
30
90°
68°
31
98°
73°
1
94°
65°
2
95°
66°
3
97°
67°
4
98°
68°
5
99°
70°
6
100°
72°
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 100°, with overnight lows between 53° and 73°. The average high for May is 88° with an average low of 63°. 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.
