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
55°
50°
24
58°
55°
25
69°
59°
26
73°
60°
27
78°
63°
28
77°
56°
29
74°
56°
30
73°
52°
31
71°
56°
1
72°
58°
2
73°
59°
3
74°
59°
4
73°
60°
5
75°
57°
6
70°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fire Island
Fire Island's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 50° and 63°. The average high for May is 71° 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 Fire Island. See also: June | July | August.
