S
M
T
W
T
F
S
30
80°
60°
31
79°
60°
1
78°
61°
2
79°
62°
3
78°
65°
4
79°
60°
5
81°
61°
6
80°
60°
7
78°
58°
8
79°
59°
9
78°
59°
10
77°
60°
11
78°
57°
12
77°
57°
13
77°
56°
14
78°
58°
15
78°
62°
16
81°
61°
17
78°
56°
18
75°
54°
19
75°
55°
20
76°
60°
21
74°
54°
22
74°
56°
23
79°
59°
24
78°
58°
25
79°
59°
26
78°
51°
27
78°
52°
28
71°
51°
29
70°
50°
30
70°
50°
1
Hist. Avg.
74°
51°
2
Hist. Avg.
73°
50°
3
Hist. Avg.
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seaford
Seaford's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 50° and 65°. The average high for September is 77° with an average low of 58°. 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 Seaford. See also: October | November | December.
