S
M
T
W
T
F
S
30
84°
64°
31
84°
61°
1
83°
60°
2
82°
60°
3
83°
58°
4
81°
60°
5
82°
60°
6
80°
59°
7
82°
53°
8
Hist. Avg.
79°
56°
9
Hist. Avg.
78°
55°
10
Hist. Avg.
78°
55°
11
Hist. Avg.
78°
55°
12
Hist. Avg.
78°
54°
13
Hist. Avg.
77°
54°
14
Hist. Avg.
77°
54°
15
Hist. Avg.
77°
53°
16
Hist. Avg.
76°
53°
17
Hist. Avg.
76°
52°
18
Hist. Avg.
76°
52°
19
Hist. Avg.
75°
52°
20
Hist. Avg.
75°
51°
21
Hist. Avg.
74°
51°
22
Hist. Avg.
74°
50°
23
Hist. Avg.
74°
50°
24
Hist. Avg.
73°
50°
25
Hist. Avg.
73°
49°
26
Hist. Avg.
72°
49°
27
Hist. Avg.
72°
48°
28
Hist. Avg.
72°
48°
29
Hist. Avg.
71°
48°
30
Hist. Avg.
71°
47°
1
Hist. Avg.
70°
47°
2
Hist. Avg.
70°
47°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Marion
Marion's September 2026 forecast shows daily high temperatures ranging from 80° to 84°, with overnight lows between 53° and 64°. The average high for September is 82° with an average low of 59°. 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.