S
M
T
W
T
F
S
30
79°
55°
31
81°
59°
1
83°
55°
2
77°
54°
3
78°
61°
4
84°
62°
5
84°
62°
6
83°
59°
7
78°
55°
8
77°
53°
9
79°
60°
10
80°
59°
11
78°
60°
12
79°
59°
13
81°
55°
14
75°
50°
15
73°
50°
16
74°
51°
17
74°
52°
18
77°
56°
19
80°
56°
20
81°
57°
21
74°
53°
22
78°
55°
23
74°
55°
24
79°
48°
25
71°
46°
26
69°
46°
27
Hist. Avg.
72°
50°
28
Hist. Avg.
72°
49°
29
Hist. Avg.
71°
49°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
70°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
70°
47°
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 69° to 84°, with overnight lows between 46° and 62°. The average high for September is 78° with an average low of 55°. 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.