S
M
T
W
T
F
S
26
87°
74°
27
88°
76°
28
89°
75°
29
85°
75°
30
86°
74°
31
89°
76°
1
90°
75°
2
91°
76°
3
91°
76°
4
90°
75°
5
91°
75°
6
89°
74°
7
87°
75°
8
88°
75°
9
86°
74°
10
85°
70°
11
85°
71°
12
86°
75°
13
87°
75°
14
86°
74°
15
86°
74°
16
88°
73°
17
90°
72°
18
90°
70°
19
88°
72°
20
87°
73°
21
90°
74°
22
89°
73°
23
90°
73°
24
89°
72°
25
90°
71°
26
89°
69°
27
86°
72°
28
87°
72°
29
85°
70°
30
85°
69°
31
87°
71°
1
89°
70°
2
89°
71°
3
88°
72°
4
87°
68°
5
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Wilmington
Wilmington's August 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 67° and 76°. The average high for August is 88° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Wilmington. See also: September | October | November.