S
M
T
W
T
F
S
30
93°
71°
31
94°
73°
1
94°
72°
2
92°
70°
3
91°
66°
4
88°
68°
5
91°
70°
6
92°
69°
7
91°
70°
8
90°
69°
9
90°
70°
10
91°
69°
11
91°
65°
12
84°
65°
13
83°
67°
14
84°
67°
15
83°
66°
16
84°
67°
17
84°
66°
18
82°
62°
19
82°
58°
20
80°
57°
21
79°
59°
22
81°
60°
23
82°
64°
24
84°
65°
25
85°
63°
26
86°
58°
27
82°
62°
28
79°
57°
29
79°
56°
30
79°
63°
1
Hist. Avg.
79°
55°
2
Hist. Avg.
79°
55°
3
Hist. Avg.
78°
54°
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 79° to 94°, with overnight lows between 56° and 73°. The average high for September is 86° with an average low of 65°. 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.
