S
M
T
W
T
F
S
26
70°
53°
27
68°
49°
28
75°
44°
29
77°
64°
30
71°
55°
1
70°
56°
2
60°
48°
3
69°
48°
4
73°
56°
5
78°
61°
6
80°
67°
7
79°
59°
8
77°
58°
9
76°
57°
10
78°
59°
11
80°
61°
12
81°
60°
13
80°
64°
14
82°
63°
15
81°
65°
16
81°
65°
17
80°
64°
18
79°
66°
19
80°
66°
20
83°
65°
21
84°
66°
22
84°
67°
23
83°
67°
24
84°
66°
25
82°
67°
26
81°
66°
27
82°
67°
28
83°
68°
29
80°
68°
30
81°
67°
31
84°
68°
1
82°
68°
2
83°
69°
3
84°
69°
4
81°
68°
5
80°
67°
6
80°
66°
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 60° to 84°, with overnight lows between 48° and 69°. The average high for May is 79° with an average low of 63°. 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.