S
M
T
W
T
F
S
26
70°
53°
27
68°
49°
28
75°
44°
29
78°
56°
30
74°
55°
1
66°
53°
2
59°
50°
3
69°
45°
4
76°
47°
5
78°
52°
6
84°
55°
7
75°
56°
8
71°
51°
9
76°
56°
10
82°
63°
11
83°
56°
12
71°
49°
13
76°
51°
14
82°
58°
15
78°
48°
16
79°
51°
17
85°
59°
18
86°
68°
19
86°
65°
20
87°
69°
21
85°
68°
22
81°
70°
23
83°
70°
24
83°
72°
25
82°
72°
26
84°
72°
27
86°
71°
28
85°
68°
29
84°
65°
30
83°
67°
31
82°
68°
1
86°
65°
2
86°
69°
3
85°
70°
4
82°
69°
5
81°
69°
6
83°
70°
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 81° to 87°, with overnight lows between 65° and 72°. The average high for May is 84° with an average low of 69°. 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.