S
M
T
W
T
F
S
30
82°
62°
31
87°
66°
1
91°
73°
2
94°
70°
3
94°
72°
4
83°
69°
5
83°
68°
6
79°
60°
7
81°
58°
8
88°
57°
9
91°
69°
10
84°
66°
11
83°
62°
12
82°
64°
13
87°
61°
14
73°
52°
15
92°
53°
16
89°
69°
17
83°
68°
18
78°
64°
19
81°
59°
20
81°
64°
21
63°
54°
22
64°
55°
23
N/A
24
71°
45°
25
73°
39°
26
72°
46°
27
N/A
28
N/A
29
77°
54°
30
78°
62°
1
82°
64°
2
67°
52°
3
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plain City
Plain City's September 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 50° and 64°. The average high for September is 74° 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 Plain City. See also: October | November | December.