S
M
T
W
T
F
S
30
94°
71°
31
93°
72°
1
97°
72°
2
98°
71°
3
98°
74°
4
96°
73°
5
84°
71°
6
98°
72°
7
99°
71°
8
91°
70°
9
93°
72°
10
92°
72°
11
90°
71°
12
90°
71°
13
91°
69°
14
92°
68°
15
91°
69°
16
90°
65°
17
89°
66°
18
87°
65°
19
88°
64°
20
86°
62°
21
85°
61°
22
88°
65°
23
88°
65°
24
87°
64°
25
87°
65°
26
88°
65°
27
87°
64°
28
87°
65°
29
86°
65°
30
87°
64°
1
86°
63°
2
85°
58°
3
77°
56°
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 77° to 93°, with overnight lows between 56° and 72°. The average high for September is 88° with an average low of 66°. 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.
