S
M
T
W
T
F
S
30
80°
61°
31
77°
60°
1
76°
58°
2
77°
58°
3
75°
56°
4
76°
56°
5
78°
57°
6
72°
54°
7
79°
59°
8
78°
58°
9
76°
60°
10
76°
59°
11
75°
56°
12
76°
59°
13
79°
55°
14
72°
50°
15
74°
53°
16
77°
56°
17
75°
57°
18
78°
52°
19
77°
49°
20
69°
48°
21
73°
55°
22
76°
54°
23
76°
54°
24
74°
49°
25
67°
48°
26
67°
46°
27
66°
45°
28
66°
45°
29
67°
44°
30
67°
45°
1
68°
48°
2
69°
45°
3
62°
46°
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 62° to 80°, with overnight lows between 44° and 61°. The average high for September is 73° with an average low of 53°. 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.
