S
M
T
W
T
F
S
30
87°
62°
31
86°
71°
1
91°
71°
2
82°
72°
3
89°
73°
4
88°
72°
5
81°
68°
6
80°
64°
7
79°
62°
8
85°
60°
9
86°
66°
10
89°
73°
11
77°
65°
12
80°
64°
13
86°
73°
14
86°
60°
15
76°
56°
16
82°
55°
17
85°
65°
18
83°
68°
19
78°
67°
20
84°
68°
21
73°
65°
22
66°
62°
23
67°
59°
24
65°
59°
25
69°
58°
26
63°
56°
27
61°
57°
28
68°
57°
29
73°
55°
30
77°
60°
1
79°
59°
2
77°
61°
3
76°
59°
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 61° to 79°, with overnight lows between 55° and 61°. The average high for September is 71° 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.
