S
M
T
W
T
F
S
30
69°
53°
31
72°
55°
1
76°
55°
2
76°
53°
3
74°
49°
4
74°
53°
5
73°
52°
6
73°
47°
7
66°
51°
8
65°
52°
9
66°
48°
10
69°
43°
11
65°
52°
12
71°
46°
13
71°
50°
14
70°
47°
15
64°
51°
16
64°
43°
17
63°
43°
18
Hist. Avg.
73°
46°
19
Hist. Avg.
72°
46°
20
Hist. Avg.
72°
45°
21
Hist. Avg.
71°
45°
22
Hist. Avg.
71°
45°
23
Hist. Avg.
71°
44°
24
Hist. Avg.
70°
44°
25
Hist. Avg.
70°
43°
26
Hist. Avg.
69°
43°
27
Hist. Avg.
69°
42°
28
Hist. Avg.
69°
42°
29
Hist. Avg.
68°
41°
30
Hist. Avg.
68°
41°
1
Hist. Avg.
67°
41°
2
Hist. Avg.
67°
40°
3
Hist. Avg.
66°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wilmington
Wilmington's September 2026 forecast shows daily high temperatures ranging from 63° to 76°, with overnight lows between 43° and 55°. The average high for September is 70° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Wilmington. See also: October | November | December.
