S
M
T
W
T
F
S
31
94°
76°
1
93°
72°
2
99°
71°
3
101°
72°
4
103°
66°
5
100°
73°
6
92°
73°
7
76°
71°
8
89°
69°
9
91°
63°
10
94°
65°
11
95°
66°
12
96°
72°
13
94°
68°
14
96°
68°
15
94°
69°
16
94°
67°
17
94°
67°
18
94°
68°
19
94°
68°
20
95°
67°
21
97°
71°
22
98°
75°
23
99°
76°
24
96°
74°
25
94°
70°
26
92°
63°
27
93°
61°
28
92°
61°
29
90°
61°
30
94°
63°
1
95°
64°
2
95°
64°
3
95°
66°
4
92°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marion
Marion's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.