S
M
T
W
T
F
S
30
72°
55°
31
68°
50°
1
66°
50°
2
66°
57°
3
68°
57°
4
66°
55°
5
66°
50°
6
68°
48°
7
66°
55°
8
63°
52°
9
61°
43°
10
63°
43°
11
64°
45°
12
70°
52°
13
64°
51°
14
71°
59°
15
66°
51°
16
61°
54°
17
63°
50°
18
64°
54°
19
64°
49°
20
62°
50°
21
63°
50°
22
61°
46°
23
62°
49°
24
61°
48°
25
60°
51°
26
63°
52°
27
62°
51°
28
62°
52°
29
63°
51°
30
62°
48°
1
62°
50°
2
61°
50°
3
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seaton Delaval
Seaton Delaval's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 46° and 59°. The average high for September is 63° with an average low of 51°. 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 Seaton Delaval. See also: October | November | December.
