S
M
T
W
T
F
S
26
54°
40°
27
53°
43°
28
45°
34°
29
64°
32°
30
59°
38°
1
62°
32°
2
71°
31°
3
76°
43°
4
79°
44°
5
56°
43°
6
62°
40°
7
75°
43°
8
80°
50°
9
80°
45°
10
76°
42°
11
86°
44°
12
81°
52°
13
83°
44°
14
87°
58°
15
96°
49°
16
89°
53°
17
86°
54°
18
54°
44°
19
63°
41°
20
59°
47°
21
60°
49°
22
68°
48°
23
76°
54°
24
81°
56°
25
85°
58°
26
84°
60°
27
81°
59°
28
80°
61°
29
80°
61°
30
79°
62°
31
80°
57°
1
85°
58°
2
80°
60°
3
75°
57°
4
77°
62°
5
82°
63°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Island
Grand Island's May 2026 forecast shows daily high temperatures ranging from 59° to 85°, with overnight lows between 41° and 63°. The average high for May is 77° with an average low of 57°. 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 Grand Island. See also: June | July | August.
