S
M
T
W
T
F
S
30
80°
59°
31
80°
60°
1
79°
60°
2
80°
59°
3
80°
52°
4
72°
49°
5
71°
54°
6
72°
59°
7
78°
59°
8
79°
58°
9
78°
55°
10
73°
56°
11
76°
57°
12
77°
58°
13
77°
58°
14
76°
57°
15
77°
54°
16
76°
50°
17
70°
54°
18
75°
48°
19
70°
46°
20
69°
45°
21
64°
43°
22
64°
53°
23
66°
48°
24
65°
44°
25
63°
43°
26
64°
48°
27
68°
52°
28
71°
50°
29
70°
48°
30
67°
50°
1
62°
47°
2
65°
41°
3
60°
44°
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 60° to 80°, with overnight lows between 41° and 60°. The average high for September is 72° with an average low of 52°. 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.
