S
M
T
W
T
F
S
26
51°
40°
27
58°
41°
28
53°
41°
29
53°
45°
30
52°
46°
1
57°
43°
2
54°
42°
3
51°
45°
4
56°
47°
5
57°
50°
6
59°
51°
7
60°
53°
8
59°
47°
9
55°
47°
10
57°
48°
11
57°
46°
12
59°
45°
13
55°
46°
14
56°
45°
15
56°
50°
16
57°
49°
17
58°
47°
18
57°
51°
19
58°
50°
20
57°
49°
21
58°
51°
22
62°
48°
23
57°
49°
24
59°
52°
25
61°
50°
26
59°
51°
27
60°
50°
28
59°
53°
29
60°
53°
30
62°
52°
31
60°
52°
1
61°
49°
2
59°
48°
3
60°
51°
4
60°
49°
5
61°
49°
6
60°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Nantucket Town
Nantucket Town's May 2026 forecast shows daily high temperatures ranging from 51° to 62°, with overnight lows between 42° and 53°. The average high for May is 58° with an average low of 49°. 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 Nantucket Town. See also: June | July | August.