S
M
T
W
T
F
S
30
93°
67°
31
92°
68°
1
92°
67°
2
91°
67°
3
90°
66°
4
90°
63°
5
89°
66°
6
91°
67°
7
89°
66°
8
88°
65°
9
89°
66°
10
89°
66°
11
88°
65°
12
86°
65°
13
83°
64°
14
84°
64°
15
83°
63°
16
85°
64°
17
83°
63°
18
83°
62°
19
82°
60°
20
82°
56°
21
80°
57°
22
81°
57°
23
84°
60°
24
83°
61°
25
84°
62°
26
83°
61°
27
84°
61°
28
78°
57°
29
79°
55°
30
83°
58°
1
83°
59°
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
September Weather in Seymour
Seymour's September 2026 forecast shows daily high temperatures ranging from 78° to 93°, with overnight lows between 55° and 68°. The average high for September is 86° 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.
