S
M
T
W
T
F
S
30
81°
66°
31
86°
66°
1
79°
67°
2
79°
70°
3
80°
70°
4
83°
68°
5
85°
65°
6
82°
67°
7
82°
65°
8
79°
64°
9
80°
65°
10
78°
69°
11
84°
64°
12
80°
63°
13
77°
64°
14
78°
67°
15
81°
67°
16
81°
65°
17
80°
62°
18
77°
60°
19
76°
61°
20
76°
65°
21
77°
61°
22
78°
64°
23
80°
64°
24
79°
65°
25
80°
66°
26
79°
58°
27
80°
58°
28
72°
57°
29
73°
56°
30
76°
58°
1
75°
59°
2
Hist. Avg.
76°
58°
3
Hist. Avg.
76°
57°
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 72° to 86°, with overnight lows between 56° and 70°. The average high for September is 79° with an average low of 64°. 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.
