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
82°
55°
7
91°
57°
8
94°
59°
9
99°
67°
10
100°
70°
11
105°
72°
12
101°
72°
13
95°
68°
14
96°
68°
15
95°
65°
16
97°
64°
17
99°
65°
18
96°
63°
19
94°
63°
20
97°
62°
21
97°
64°
22
92°
63°
23
95°
70°
24
94°
69°
25
95°
67°
26
91°
65°
27
90°
64°
28
90°
72°
29
91°
67°
30
94°
66°
31
90°
65°
1
91°
68°
2
93°
72°
3
97°
74°
4
100°
75°
5
101°
74°
6
100°
75°
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 90° to 105°, with overnight lows between 62° and 75°. The average high for May is 96° with an average low of 68°. 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.
