S
M
T
W
T
F
S
30
82°
67°
31
86°
68°
1
91°
74°
2
93°
74°
3
92°
75°
4
89°
72°
5
86°
71°
6
79°
60°
7
79°
58°
8
84°
70°
9
80°
64°
10
76°
49°
11
79°
58°
12
79°
59°
13
77°
58°
14
74°
57°
15
70°
55°
16
72°
53°
17
74°
54°
18
74°
53°
19
71°
51°
20
70°
49°
21
70°
54°
22
66°
53°
23
67°
54°
24
73°
54°
25
75°
53°
26
74°
53°
27
73°
52°
28
75°
54°
29
75°
55°
30
74°
54°
1
74°
51°
2
73°
46°
3
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cassopolis
Cassopolis's September 2026 forecast shows daily high temperatures ranging from 60° to 84°, with overnight lows between 42° and 70°. The average high for September is 74° with an average low of 54°. 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 Cassopolis. See also: October | November | December.
