S
M
T
W
T
F
S
30
80°
69°
31
89°
73°
1
93°
70°
2
95°
71°
3
94°
72°
4
93°
70°
5
92°
68°
6
86°
68°
7
83°
67°
8
86°
66°
9
88°
64°
10
84°
61°
11
83°
60°
12
78°
58°
13
76°
58°
14
76°
57°
15
78°
53°
16
82°
59°
17
81°
59°
18
75°
56°
19
79°
58°
20
81°
58°
21
80°
57°
22
80°
56°
23
78°
56°
24
79°
55°
25
78°
56°
26
71°
48°
27
67°
44°
28
66°
43°
29
67°
46°
30
66°
43°
1
65°
52°
2
68°
49°
3
65°
48°
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 65° to 95°, with overnight lows between 43° and 72°. The average high for September is 79° 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.
