S
M
T
W
T
F
S
26
63°
47°
27
76°
46°
28
74°
58°
29
63°
49°
30
57°
41°
1
54°
40°
2
51°
34°
3
61°
32°
4
72°
47°
5
69°
57°
6
59°
43°
7
59°
39°
8
69°
42°
9
71°
52°
10
68°
50°
11
68°
43°
12
71°
40°
13
69°
48°
14
62°
43°
15
66°
40°
16
72°
56°
17
82°
62°
18
86°
66°
19
84°
65°
20
71°
50°
21
65°
49°
22
66°
53°
23
75°
61°
24
69°
58°
25
76°
57°
26
77°
67°
27
75°
62°
28
80°
56°
29
75°
57°
30
73°
54°
31
74°
55°
1
77°
57°
2
79°
60°
3
78°
58°
4
79°
60°
5
78°
62°
6
80°
59°
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 69° to 80°, with overnight lows between 54° and 67°. The average high for May is 76° with an average low of 59°. 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.