S
M
T
W
T
F
S
26
80°
57°
27
79°
57°
28
78°
54°
29
77°
54°
30
79°
55°
1
79°
55°
2
80°
57°
3
85°
63°
4
86°
60°
5
79°
55°
6
80°
56°
7
81°
59°
8
86°
61°
9
87°
63°
10
90°
63°
11
91°
64°
12
91°
65°
13
92°
66°
14
88°
63°
15
84°
59°
16
85°
62°
17
87°
63°
18
90°
66°
19
92°
67°
20
90°
66°
21
92°
68°
22
91°
63°
23
92°
67°
24
96°
66°
25
97°
62°
26
91°
65°
27
95°
66°
28
99°
69°
29
101°
68°
30
101°
72°
31
100°
76°
1
102°
74°
2
102°
73°
3
100°
69°
4
99°
66°
5
94°
63°
6
93°
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 77° to 102°, with overnight lows between 54° and 76°. The average high for May is 90° 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.
