S
M
T
W
T
F
S
26
52°
38°
27
62°
37°
28
61°
41°
29
56°
41°
30
52°
46°
1
59°
47°
2
54°
44°
3
59°
47°
4
60°
52°
5
62°
51°
6
59°
49°
7
58°
47°
8
57°
47°
9
58°
49°
10
61°
50°
11
62°
49°
12
61°
50°
13
60°
51°
14
62°
43°
15
59°
52°
16
60°
50°
17
60°
48°
18
61°
54°
19
63°
54°
20
63°
53°
21
64°
54°
22
68°
51°
23
61°
51°
24
63°
55°
25
64°
52°
26
63°
53°
27
62°
53°
28
63°
57°
29
66°
57°
30
68°
56°
31
65°
55°
1
65°
51°
2
64°
51°
3
65°
52°
4
65°
52°
5
66°
53°
6
65°
53°
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 54° to 68°, with overnight lows between 43° and 57°. The average high for May is 62° with an average low of 51°. 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.