S
M
T
W
T
F
S
26
55°
39°
27
65°
40°
28
63°
40°
29
60°
43°
30
58°
46°
1
63°
40°
2
59°
49°
3
59°
43°
4
65°
46°
5
67°
53°
6
62°
56°
7
64°
45°
8
64°
44°
9
62°
48°
10
67°
52°
11
60°
45°
12
65°
46°
13
65°
51°
14
67°
53°
15
67°
50°
16
73°
47°
17
84°
57°
18
83°
59°
19
81°
63°
20
93°
66°
21
67°
55°
22
67°
54°
23
56°
50°
24
57°
50°
25
73°
55°
26
79°
60°
27
79°
61°
28
78°
56°
29
75°
58°
30
71°
51°
31
72°
53°
1
73°
53°
2
70°
56°
3
73°
55°
4
70°
60°
5
76°
61°
6
77°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Islandia
Islandia's May 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 51° and 63°. The average high for May is 74° 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 Islandia. See also: June | July | August.
