S
M
T
W
T
F
S
30
84°
70°
31
90°
64°
1
93°
66°
2
93°
70°
3
95°
70°
4
95°
70°
5
91°
70°
6
86°
66°
7
70°
62°
8
79°
61°
9
83°
63°
10
86°
66°
11
83°
67°
12
83°
66°
13
84°
67°
14
86°
66°
15
83°
63°
16
81°
63°
17
80°
64°
18
82°
63°
19
78°
59°
20
75°
63°
21
83°
64°
22
81°
63°
23
81°
62°
24
80°
62°
25
80°
61°
26
81°
62°
27
81°
62°
28
80°
61°
29
80°
61°
30
79°
60°
1
79°
60°
2
78°
58°
3
75°
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 86°, with overnight lows between 53° and 67°. The average high for September is 81° 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.
