S
M
T
W
T
F
S
30
82°
60°
31
N/A
1
88°
67°
2
89°
68°
3
91°
67°
4
88°
65°
5
84°
60°
6
80°
59°
7
76°
59°
8
77°
58°
9
80°
58°
10
79°
56°
11
79°
51°
12
78°
51°
13
80°
52°
14
79°
55°
15
78°
54°
16
72°
54°
17
71°
53°
18
75°
53°
19
75°
52°
20
76°
51°
21
76°
45°
22
75°
46°
23
77°
51°
24
78°
52°
25
77°
50°
26
74°
50°
27
73°
51°
28
72°
50°
29
76°
49°
30
76°
48°
1
72°
45°
2
71°
44°
3
74°
47°
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 91°, with overnight lows between 44° and 68°. The average high for September is 78° with an average low of 54°. 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.
