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°
75°
9
96°
74°
10
88°
67°
11
83°
64°
12
89°
69°
13
93°
68°
14
92°
71°
15
86°
61°
16
82°
60°
17
81°
60°
18
79°
56°
19
76°
56°
20
77°
53°
21
80°
57°
22
81°
62°
23
83°
61°
24
84°
63°
25
84°
63°
26
83°
62°
27
84°
62°
28
83°
61°
29
83°
62°
30
82°
62°
1
80°
58°
2
80°
52°
3
69°
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 69° to 96°, with overnight lows between 48° and 75°. 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.
