S
M
T
W
T
F
S
30
75°
55°
31
76°
56°
1
75°
54°
2
75°
53°
3
76°
54°
4
76°
54°
5
77°
58°
6
76°
57°
7
74°
57°
8
74°
56°
9
74°
52°
10
76°
51°
11
74°
51°
12
75°
53°
13
74°
51°
14
72°
56°
15
79°
58°
16
80°
58°
17
78°
57°
18
78°
48°
19
76°
47°
20
71°
48°
21
69°
53°
22
72°
55°
23
76°
54°
24
75°
55°
25
76°
45°
26
75°
43°
27
66°
44°
28
65°
43°
29
66°
44°
30
66°
42°
1
Hist. Avg.
68°
44°
2
Hist. Avg.
68°
44°
3
Hist. Avg.
68°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ohio
Ohio's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 42° and 58°. The average high for September is 74° with an average low of 52°. 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 Ohio. See also: October | November | December.
