S
M
T
W
T
F
S
30
90°
73°
31
91°
71°
1
88°
71°
2
88°
74°
3
92°
73°
4
92°
75°
5
93°
75°
6
92°
73°
7
88°
74°
8
90°
74°
9
88°
73°
10
89°
73°
11
86°
72°
12
87°
72°
13
90°
71°
14
89°
72°
15
89°
71°
16
88°
72°
17
89°
72°
18
89°
71°
19
88°
71°
20
88°
70°
21
89°
70°
22
88°
71°
23
89°
70°
24
88°
69°
25
88°
69°
26
86°
66°
27
87°
68°
28
87°
69°
29
86°
68°
30
85°
66°
1
86°
67°
2
86°
67°
3
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chickasaw
Chickasaw's September 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 66° and 75°. The average high for September is 88° with an average low of 71°. 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 Chickasaw. See also: October | November | December.