S
M
T
W
T
F
S
26
55°
32°
27
64°
31°
28
63°
31°
29
55°
32°
30
54°
38°
1
57°
47°
2
53°
43°
3
56°
45°
4
60°
50°
5
63°
52°
6
61°
50°
7
59°
44°
8
56°
41°
9
57°
48°
10
60°
47°
11
63°
48°
12
62°
48°
13
61°
50°
14
62°
48°
15
60°
51°
16
61°
49°
17
60°
47°
18
61°
53°
19
63°
53°
20
64°
52°
21
63°
53°
22
68°
50°
23
61°
50°
24
63°
54°
25
65°
51°
26
63°
52°
27
63°
52°
28
64°
56°
29
67°
56°
30
69°
55°
31
66°
54°
1
66°
51°
2
65°
51°
3
65°
52°
4
66°
51°
5
66°
52°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Southold
Southold's May 2026 forecast shows daily high temperatures ranging from 53° to 69°, with overnight lows between 41° and 56°. The average high for May is 62° with an average low of 50°. 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 Southold. See also: June | July | August.
