S
M
T
W
T
F
S
26
64°
55°
27
66°
57°
28
70°
52°
29
73°
54°
30
72°
57°
1
72°
61°
2
68°
59°
3
66°
59°
4
70°
57°
5
68°
57°
6
72°
54°
7
72°
55°
8
70°
61°
9
72°
61°
10
72°
61°
11
68°
61°
12
70°
59°
13
70°
61°
14
71°
60°
15
71°
61°
16
69°
62°
17
69°
61°
18
72°
62°
19
73°
59°
20
75°
58°
21
71°
59°
22
72°
58°
23
70°
59°
24
71°
58°
25
70°
60°
26
73°
59°
27
72°
57°
28
68°
54°
29
68°
53°
30
71°
54°
31
74°
58°
1
75°
59°
2
76°
61°
3
76°
61°
4
75°
55°
5
69°
56°
6
71°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wilmington
Wilmington's May 2026 forecast shows daily high temperatures ranging from 68° to 76°, with overnight lows between 53° and 62°. The average high for May is 72° 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 Wilmington. See also: June | July | August.