S
M
T
W
T
F
S
30
80°
63°
31
76°
63°
1
76°
62°
2
78°
58°
3
75°
55°
4
74°
55°
5
74°
57°
6
75°
59°
7
79°
61°
8
82°
60°
9
77°
57°
10
76°
60°
11
73°
48°
12
72°
51°
13
71°
50°
14
73°
48°
15
72°
50°
16
73°
48°
17
72°
48°
18
72°
47°
19
71°
45°
20
69°
45°
21
69°
46°
22
70°
46°
23
71°
47°
24
74°
52°
25
78°
55°
26
77°
54°
27
70°
53°
28
76°
50°
29
70°
43°
30
68°
48°
1
67°
53°
2
75°
40°
3
76°
40°
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 67° to 82°, with overnight lows between 40° and 63°. The average high for September is 74° 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.
