S
M
T
W
T
F
S
30
85°
61°
31
86°
60°
1
86°
58°
2
83°
54°
3
74°
59°
4
76°
60°
5
83°
56°
6
83°
47°
7
74°
47°
8
72°
52°
9
74°
54°
10
72°
57°
11
73°
56°
12
78°
52°
13
81°
46°
14
71°
44°
15
68°
43°
16
67°
44°
17
67°
47°
18
70°
43°
19
77°
42°
20
67°
45°
21
68°
52°
22
74°
51°
23
77°
52°
24
76°
52°
25
75°
51°
26
77°
51°
27
78°
49°
28
74°
45°
29
66°
46°
30
64°
46°
1
71°
44°
2
70°
49°
3
74°
49°
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 64° to 86°, with overnight lows between 42° and 61°. The average high for September is 75° with an average low of 50°. 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.
