S
M
T
W
T
F
S
30
90°
76°
31
91°
76°
1
92°
76°
2
90°
77°
3
90°
78°
4
92°
78°
5
92°
78°
6
91°
78°
7
88°
77°
8
88°
79°
9
94°
79°
10
90°
77°
11
92°
77°
12
89°
79°
13
86°
75°
14
94°
77°
15
92°
79°
16
91°
80°
17
91°
77°
18
91°
76°
19
90°
77°
20
89°
73°
21
89°
73°
22
89°
75°
23
89°
77°
24
90°
72°
25
87°
72°
26
88°
69°
27
86°
73°
28
88°
74°
29
89°
75°
30
88°
74°
1
89°
76°
2
87°
76°
3
86°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Seminole
Seminole's September 2026 forecast shows daily high temperatures ranging from 86° to 90°, with overnight lows between 69° and 76°. The average high for September is 88° with an average low of 74°. 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 Seminole. See also: October | November | December.