S
M
T
W
T
F
S
30
69°
64°
31
76°
65°
1
84°
69°
2
81°
66°
3
74°
61°
4
71°
61°
5
75°
57°
6
74°
54°
7
73°
54°
8
76°
53°
9
73°
67°
10
73°
51°
11
71°
47°
12
80°
54°
13
71°
60°
14
65°
48°
15
71°
48°
16
70°
55°
17
70°
50°
18
69°
49°
19
65°
49°
20
69°
52°
21
64°
45°
22
66°
42°
23
70°
43°
24
N/A
25
69°
42°
26
72°
44°
27
71°
46°
28
69°
50°
29
69°
54°
30
68°
54°
1
69°
54°
2
68°
52°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Seaforth
Seaforth's September 2026 forecast shows daily high temperatures ranging from 66° to 72°, with overnight lows between 42° and 54°. The average high for September is 69° with an average low of 50°. 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 Seaforth. See also: October | November | December.
