S
M
T
W
T
F
S
30
97°
71°
31
N/A
1
88°
64°
2
87°
67°
3
94°
69°
4
96°
71°
5
89°
65°
6
92°
61°
7
83°
62°
8
84°
59°
9
82°
53°
10
81°
51°
11
79°
54°
12
77°
55°
13
78°
53°
14
75°
50°
15
80°
56°
16
79°
56°
17
80°
58°
18
80°
56°
19
79°
54°
20
78°
56°
21
80°
56°
22
80°
55°
23
79°
56°
24
79°
56°
25
78°
55°
26
77°
54°
27
78°
53°
28
78°
53°
29
77°
52°
30
77°
54°
1
76°
54°
2
77°
53°
3
76°
51°
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 75° to 96°, with overnight lows between 50° and 71°. The average high for September is 81° with an average low of 57°. 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.
