S
M
T
W
T
F
S
30
94°
69°
31
96°
70°
1
94°
72°
2
95°
74°
3
99°
73°
4
97°
70°
5
97°
71°
6
94°
70°
7
94°
71°
8
93°
71°
9
89°
67°
10
87°
62°
11
81°
57°
12
85°
62°
13
84°
63°
14
82°
62°
15
83°
61°
16
83°
61°
17
82°
60°
18
83°
61°
19
83°
62°
20
82°
61°
21
82°
61°
22
81°
60°
23
82°
59°
24
82°
59°
25
81°
58°
26
81°
58°
27
82°
59°
28
81°
58°
29
80°
59°
30
81°
58°
1
80°
57°
2
80°
58°
3
78°
57°
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 99°, with overnight lows between 57° and 74°. 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.
