S
M
T
W
T
F
S
30
82°
64°
31
84°
56°
1
85°
55°
2
78°
54°
3
77°
61°
4
79°
62°
5
83°
54°
6
84°
53°
7
76°
53°
8
76°
61°
9
79°
59°
10
81°
59°
11
75°
56°
12
74°
54°
13
74°
50°
14
73°
50°
15
73°
54°
16
74°
56°
17
74°
57°
18
80°
58°
19
81°
57°
20
78°
56°
21
80°
54°
22
76°
52°
23
76°
48°
24
73°
47°
25
69°
47°
26
70°
48°
27
76°
54°
28
70°
54°
29
77°
49°
30
Hist. Avg.
71°
49°
1
Hist. Avg.
70°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Seaton
Seaton's September 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 47° and 64°. The average high for September is 77° with an average low of 55°. 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. See also: October | November | December.