S
M
T
W
T
F
S
30
93°
65°
31
95°
73°
1
97°
74°
2
97°
73°
3
99°
74°
4
100°
74°
5
100°
73°
6
90°
70°
7
88°
63°
8
93°
64°
9
94°
74°
10
86°
71°
11
83°
70°
12
88°
69°
13
89°
68°
14
91°
67°
15
95°
69°
16
93°
71°
17
85°
65°
18
83°
60°
19
74°
54°
20
81°
59°
21
77°
59°
22
81°
58°
23
80°
56°
24
84°
63°
25
83°
61°
26
82°
61°
27
83°
60°
28
83°
61°
29
82°
61°
30
82°
60°
1
79°
58°
2
79°
58°
3
81°
57°
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 74° to 95°, with overnight lows between 54° and 71°. The average high for September is 84° with an average low of 62°. 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.
