S
M
T
W
T
F
S
30
93°
65°
31
95°
73°
1
97°
74°
2
97°
73°
3
99°
74°
4
100°
74°
5
100°
73°
6
90°
70°
7
88°
63°
8
93°
64°
9
94°
74°
10
86°
72°
11
87°
69°
12
89°
70°
13
91°
71°
14
88°
64°
15
96°
68°
16
95°
75°
17
96°
73°
18
97°
73°
19
96°
72°
20
94°
72°
21
87°
66°
22
66°
62°
23
67°
61°
24
75°
60°
25
77°
56°
26
73°
56°
27
78°
55°
28
N/A
29
84°
53°
30
90°
60°
1
90°
67°
2
75°
63°
3
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marion
Marion's September 2026 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.