S
M
T
W
T
F
S
26
78°
57°
27
82°
58°
28
86°
60°
29
79°
56°
30
84°
60°
1
92°
62°
2
94°
64°
3
92°
62°
4
89°
60°
5
89°
59°
6
92°
58°
7
87°
56°
8
89°
58°
9
89°
57°
10
86°
54°
11
86°
54°
12
87°
55°
13
87°
60°
14
88°
59°
15
92°
62°
16
91°
58°
17
88°
58°
18
87°
56°
19
88°
59°
20
90°
65°
21
91°
66°
22
94°
66°
23
95°
65°
24
94°
64°
25
92°
63°
26
92°
62°
27
96°
66°
28
100°
68°
29
101°
68°
30
102°
67°
31
101°
68°
1
97°
66°
2
97°
66°
3
98°
67°
4
99°
65°
5
101°
64°
6
104°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gilbert
Gilbert's May 2026 forecast shows daily high temperatures ranging from 78° to 104°, with overnight lows between 54° and 68°. The average high for May is 92° with an average low of 61°. 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 Gilbert. See also: June | July | August.