S
M
T
W
T
F
S
30
71°
52°
31
71°
52°
1
72°
50°
2
70°
52°
3
73°
51°
4
71°
50°
5
72°
53°
6
71°
52°
7
69°
49°
8
71°
54°
9
73°
48°
10
68°
47°
11
73°
49°
12
73°
54°
13
72°
54°
14
67°
51°
15
72°
55°
16
75°
56°
17
74°
55°
18
74°
47°
19
73°
44°
20
68°
45°
21
62°
49°
22
64°
50°
23
68°
48°
24
64°
50°
25
64°
43°
26
65°
41°
27
62°
42°
28
61°
43°
29
59°
42°
30
59°
39°
1
Hist. Avg.
65°
44°
2
Hist. Avg.
65°
44°
3
Hist. Avg.
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seymour
Seymour's September 2026 forecast shows daily high temperatures ranging from 59° to 75°, with overnight lows between 39° and 56°. The average high for September is 69° with an average low of 49°. 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 Seymour. See also: October | November | December.
