S
M
T
W
T
F
S
26
50°
27°
27
34°
30°
28
50°
32°
29
54°
34°
30
54°
27°
1
57°
34°
2
73°
37°
3
68°
45°
4
55°
39°
5
45°
28°
6
54°
27°
7
61°
30°
8
68°
45°
9
59°
39°
10
70°
41°
11
84°
48°
12
70°
45°
13
88°
41°
14
75°
48°
15
73°
43°
16
73°
39°
17
55°
41°
18
43°
36°
19
57°
36°
20
66°
46°
21
57°
37°
22
N/A
23
71°
44°
24
84°
49°
25
87°
61°
26
88°
63°
27
78°
59°
28
73°
57°
29
77°
54°
30
74°
53°
31
77°
55°
1
74°
53°
2
74°
55°
3
71°
52°
4
72°
50°
5
67°
55°
6
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Nisland
Nisland's May 2026 forecast shows daily high temperatures ranging from 67° to 88°, with overnight lows between 44° and 63°. The average high for May is 76° with an average low of 54°. 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 Nisland. See also: June | July | August.
