S
M
T
W
T
F
S
30
82°
54°
31
80°
67°
1
76°
62°
2
72°
66°
3
80°
63°
4
81°
60°
5
77°
54°
6
74°
54°
7
77°
59°
8
75°
54°
9
77°
60°
10
80°
59°
11
81°
55°
12
73°
53°
13
75°
52°
14
77°
53°
15
71°
52°
16
71°
56°
17
75°
52°
18
69°
49°
19
69°
48°
20
71°
52°
21
75°
56°
22
77°
57°
23
78°
56°
24
77°
53°
25
75°
52°
26
75°
53°
27
76°
54°
28
76°
54°
29
75°
49°
30
66°
45°
1
64°
44°
2
66°
51°
3
72°
52°
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 81°, with overnight lows between 44° and 67°. The average high for September is 75° with an average low of 55°. 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.
