The temperatures in Cincinnati in September are comfortable with low of 14°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Cincinnati during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Cincinnati in September 2025.
If you’re planning to visit Cincinnati in the near future, we highly recommend that you review the 14 day weather forecast for Cincinnati before you arrive.
Temperatures
26° / 14°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
107
mm
Sun Hours
10.3
Hrs
