S
M
T
W
T
F
S
26
81°
67°
27
80°
66°
28
80°
66°
29
79°
65°
30
81°
67°
31
81°
66°
1
80°
65°
2
80°
66°
3
81°
66°
4
80°
65°
5
80°
66°
6
79°
66°
7
80°
65°
8
80°
66°
9
80°
66°
10
81°
65°
11
80°
63°
12
75°
60°
13
74°
60°
14
75°
61°
15
78°
65°
16
80°
64°
17
78°
61°
18
76°
60°
19
75°
64°
20
76°
65°
21
79°
64°
22
78°
63°
23
78°
62°
24
79°
61°
25
77°
60°
26
77°
60°
27
76°
61°
28
76°
59°
29
77°
60°
30
76°
60°
31
77°
59°
1
77°
59°
2
76°
60°
3
75°
60°
4
75°
59°
5
76°
60°
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 74° to 81°, with overnight lows between 59° and 67°. The average high for August is 78° 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 August weather will actually feel in Wilmington. See also: September | October | November.