S
M
T
W
T
F
S
26
60°
49°
27
63°
41°
28
67°
37°
29
72°
43°
30
71°
55°
1
66°
43°
2
59°
41°
3
63°
41°
4
79°
51°
5
84°
60°
6
78°
63°
7
68°
47°
8
70°
42°
9
78°
55°
10
84°
58°
11
65°
40°
12
72°
37°
13
77°
54°
14
68°
54°
15
73°
44°
16
84°
48°
17
90°
65°
18
93°
70°
19
95°
71°
20
94°
70°
21
88°
63°
22
64°
57°
23
65°
57°
24
75°
69°
25
78°
69°
26
80°
70°
27
80°
69°
28
77°
66°
29
76°
63°
30
75°
60°
31
71°
61°
1
73°
63°
2
78°
63°
3
76°
64°
4
76°
66°
5
82°
64°
6
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seaford
Seaford's May 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 60° and 70°. The average high for May is 77° with an average low of 65°. 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 Seaford. See also: June | July | August.