S
M
T
W
T
F
S
30
91°
66°
31
96°
63°
1
99°
69°
2
99°
69°
3
99°
69°
4
100°
70°
5
89°
68°
6
83°
61°
7
84°
59°
8
85°
56°
9
88°
56°
10
95°
69°
11
93°
70°
12
85°
72°
13
87°
72°
14
86°
67°
15
81°
56°
16
83°
54°
17
89°
59°
18
91°
67°
19
86°
65°
20
88°
61°
21
89°
66°
22
83°
64°
23
64°
60°
24
65°
56°
25
71°
52°
26
75°
53°
27
78°
57°
28
77°
55°
29
77°
63°
30
83°
58°
1
86°
53°
2
89°
56°
3
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seaboard
Seaboard's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Seaboard. See also: October | November | December.