S
M
T
W
T
F
S
30
86°
71°
31
91°
70°
1
94°
72°
2
95°
72°
3
93°
72°
4
95°
72°
5
98°
72°
6
91°
70°
7
84°
68°
8
86°
66°
9
88°
64°
10
88°
68°
11
91°
72°
12
88°
70°
13
90°
73°
14
95°
72°
15
86°
66°
16
86°
61°
17
88°
61°
18
91°
66°
19
88°
70°
20
90°
66°
21
91°
66°
22
88°
70°
23
72°
64°
24
66°
57°
25
72°
49°
26
80°
50°
27
80°
51°
28
82°
54°
29
83°
60°
30
85°
62°
1
87°
65°
2
84°
64°
3
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marion
Marion's September 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 49° and 65°. The average high for September is 82° with an average low of 58°. 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 Marion. See also: October | November | December.
