S
M
T
W
T
F
S
26
92°
58°
27
93°
60°
28
92°
59°
29
92°
60°
30
93°
61°
1
93°
62°
2
94°
63°
3
95°
63°
4
90°
62°
5
88°
61°
6
94°
64°
7
93°
64°
8
95°
63°
9
85°
61°
10
87°
64°
11
88°
63°
12
94°
64°
13
95°
65°
14
96°
65°
15
94°
59°
16
95°
59°
17
96°
58°
18
95°
59°
19
96°
57°
20
95°
56°
21
92°
55°
22
95°
58°
23
96°
58°
24
100°
62°
25
101°
61°
26
95°
56°
27
94°
57°
28
93°
59°
29
93°
58°
30
94°
59°
31
95°
63°
1
100°
64°
2
104°
71°
3
104°
69°
4
101°
70°
5
104°
69°
6
102°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mesa
Mesa's May 2026 forecast shows daily high temperatures ranging from 85° to 104°, with overnight lows between 55° and 71°. The average high for May is 95° with an average low of 62°. 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 Mesa. See also: June | July | August.