S
M
T
W
T
F
S
30
90°
65°
31
91°
68°
1
90°
68°
2
88°
66°
3
90°
66°
4
89°
62°
5
87°
64°
6
89°
66°
7
89°
65°
8
88°
65°
9
88°
64°
10
89°
65°
11
88°
66°
12
88°
65°
13
87°
64°
14
87°
60°
15
84°
61°
16
86°
61°
17
86°
63°
18
87°
62°
19
86°
62°
20
85°
63°
21
82°
63°
22
85°
62°
23
86°
62°
24
85°
60°
25
83°
56°
26
79°
55°
27
Hist. Avg.
81°
60°
28
Hist. Avg.
81°
60°
29
Hist. Avg.
80°
59°
30
Hist. Avg.
80°
59°
1
Hist. Avg.
80°
58°
2
Hist. Avg.
79°
58°
3
Hist. Avg.
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Seymour
Seymour's September 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 55° and 68°. The average high for September is 87° with an average low of 63°. 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.
