S
M
T
W
T
F
S
30
80°
63°
31
88°
71°
1
88°
73°
2
93°
71°
3
95°
71°
4
85°
68°
5
86°
61°
6
79°
56°
7
81°
56°
8
86°
57°
9
89°
70°
10
85°
65°
11
84°
58°
12
77°
64°
13
86°
60°
14
76°
50°
15
87°
69°
16
86°
69°
17
83°
64°
18
78°
55°
19
85°
64°
20
81°
61°
21
73°
56°
22
73°
52°
23
71°
51°
24
72°
50°
25
71°
51°
26
72°
50°
27
70°
51°
28
74°
48°
29
75°
54°
30
73°
55°
1
73°
54°
2
75°
53°
3
72°
53°
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 70° to 87°, with overnight lows between 48° and 69°. The average high for September is 76° with an average low of 56°. 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.
