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°
58°
13
77°
60°
14
79°
49°
15
79°
56°
16
82°
67°
17
87°
67°
18
84°
68°
19
83°
67°
20
82°
66°
21
85°
68°
22
84°
68°
23
85°
70°
24
85°
69°
25
86°
63°
26
83°
67°
27
82°
67°
28
83°
68°
29
83°
68°
30
84°
67°
31
83°
68°
1
83°
69°
2
84°
68°
3
82°
68°
4
81°
69°
5
82°
70°
6
82°
69°
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 71° to 87°, with overnight lows between 49° and 70°. The average high for May is 82° with an average low of 66°. 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.