S
M
T
W
T
F
S
30
80°
61°
31
79°
69°
1
78°
67°
2
74°
65°
3
88°
69°
4
85°
73°
5
80°
68°
6
73°
61°
7
79°
57°
8
80°
61°
9
80°
63°
10
86°
70°
11
79°
62°
12
76°
68°
13
80°
68°
14
81°
63°
15
79°
70°
16
86°
67°
17
78°
65°
18
79°
64°
19
78°
61°
20
76°
61°
21
77°
60°
22
73°
59°
23
74°
58°
24
72°
62°
25
69°
54°
26
69°
55°
27
70°
61°
28
77°
59°
29
69°
56°
30
69°
60°
1
70°
60°
2
70°
56°
3
72°
60°
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 69° to 86°, with overnight lows between 54° and 70°. The average high for September is 75° with an average low of 62°. 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.
