S
M
T
W
T
F
S
26
81°
57°
27
86°
61°
28
65°
49°
29
63°
46°
30
68°
38°
1
64°
41°
2
63°
41°
3
80°
37°
4
83°
61°
5
65°
43°
6
63°
39°
7
69°
37°
8
77°
45°
9
82°
50°
10
72°
47°
11
76°
42°
12
80°
51°
13
77°
48°
14
77°
42°
15
83°
59°
16
86°
70°
17
85°
64°
18
81°
67°
19
75°
58°
20
62°
53°
21
64°
57°
22
68°
61°
23
80°
61°
24
79°
59°
25
80°
55°
26
76°
62°
27
81°
64°
28
79°
65°
29
73°
58°
30
79°
52°
31
79°
54°
1
80°
51°
2
78°
52°
3
80°
55°
4
79°
59°
5
80°
60°
6
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Montauk
Montauk's May 2026 forecast shows daily high temperatures ranging from 73° to 82°, with overnight lows between 51° and 65°. The average high for May is 79° with an average low of 58°. 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 Montauk. See also: June | July | August.