S
M
T
W
T
F
S
30
92°
71°
31
95°
69°
1
90°
70°
2
91°
70°
3
90°
69°
4
90°
69°
5
91°
67°
6
89°
68°
7
90°
72°
8
91°
71°
9
93°
72°
10
94°
71°
11
92°
70°
12
93°
69°
13
91°
69°
14
92°
70°
15
93°
70°
16
85°
64°
17
86°
69°
18
Hist. Avg.
89°
65°
19
Hist. Avg.
88°
65°
20
Hist. Avg.
88°
65°
21
Hist. Avg.
88°
65°
22
Hist. Avg.
88°
64°
23
Hist. Avg.
88°
64°
24
Hist. Avg.
87°
64°
25
Hist. Avg.
87°
63°
26
Hist. Avg.
87°
63°
27
Hist. Avg.
87°
63°
28
Hist. Avg.
86°
62°
29
Hist. Avg.
86°
62°
30
Hist. Avg.
86°
62°
1
Hist. Avg.
86°
61°
2
Hist. Avg.
85°
61°
3
Hist. Avg.
85°
60°
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 85° to 95°, with overnight lows between 64° and 72°. The average high for September is 91° with an average low of 69°. 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.