S
M
T
W
T
F
S
26
67°
50°
27
67°
45°
28
65°
45°
29
65°
41°
30
66°
42°
1
68°
46°
2
67°
41°
3
66°
42°
4
69°
44°
5
73°
48°
6
76°
51°
7
77°
53°
8
78°
53°
9
78°
52°
10
77°
53°
11
77°
53°
12
75°
52°
13
72°
51°
14
70°
48°
15
68°
46°
16
70°
50°
17
72°
49°
18
77°
50°
19
72°
47°
20
71°
46°
21
72°
45°
22
71°
46°
23
72°
49°
24
71°
57°
25
76°
55°
26
73°
58°
27
82°
50°
28
75°
58°
29
81°
59°
30
83°
51°
31
78°
50°
1
74°
52°
2
81°
52°
3
79°
53°
4
80°
60°
5
83°
53°
6
76°
51°
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 65° to 83°, with overnight lows between 41° and 60°. The average high for May is 74° with an average low of 50°. 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.