S
M
T
W
T
F
S
30
80°
63°
31
88°
71°
1
88°
73°
2
93°
71°
3
95°
71°
4
85°
68°
5
86°
61°
6
79°
56°
7
81°
56°
8
86°
57°
9
89°
70°
10
85°
65°
11
84°
58°
12
77°
64°
13
86°
60°
14
74°
52°
15
86°
67°
16
85°
69°
17
83°
64°
18
80°
58°
19
82°
64°
20
77°
61°
21
76°
60°
22
75°
56°
23
71°
53°
24
73°
55°
25
75°
53°
26
72°
51°
27
77°
54°
28
76°
55°
29
75°
54°
30
73°
55°
1
73°
54°
2
75°
53°
3
72°
53°
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 71° to 86°, with overnight lows between 51° and 69°. The average high for September is 77° with an average low of 57°. 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.
