Weather in Cincinnati, Ohio for September 2025
Until now, September 2025 in Cincinnati is cooler than usual, with temperatures averaging 25.2 °F, this is -2.8 °F below the typical seasonal average.
The forecast for the next days in Cincinnati predicts temperatures to be around 28 °F, close to the historical average.
In general, the average temperature in Cincinnati at the beginning of September is 28.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24 °F by the end of September.
The climate of Cincinnati in September is notably wet, with an average of 15 rainy days, and a total of 62.4 mm of precipitation.
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Cincinnati Weather September
Temperatures trend during September in Cincinnati
September weather in Cincinnati day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 30° /15° | 0.5 mm | 7 | |
| Sept. 2 |  Sunny | 30° /15° | 0 mm | 7 | |
| Sept. 3 | Partly cloudy | 28° /15° | 2 mm | 7 | |
| Sept. 4 |  Moderate or heavy rain shower | 29° /17° | 19.5 mm | 7 | |
| Sept. 5 | Moderate or heavy rain shower | 28° /17° | 10.2 mm | 6 | |
| Sept. 6 | Moderate or heavy rain shower | 28° /16° | 7 mm | 6 | |
| Sept. 7 | Sunny | 26° /14° | 0.1 mm | 6 | |
| Sept. 8 | Sunny | 26° /12° | 0.8 mm | 6 | |
| Sept. 9 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 10 | Sunny | 27° /13° | 0.4 mm | 7 | |
| Sept. 11 | Sunny | 29° /15° | 2.8 mm | 7 | |
| Sept. 12 |  Overcast | 28° /15° | 0 mm | 6 | |
| Sept. 13 |  Cloudy | 30° /13° | 0 mm | 1.6 | |
| Sept. 14 | Overcast | 27° /19° | 0 mm | 1.5 | |
| Sept. 15 | Sunny | 30° /16° | 0 mm | 1.5 | |
| Sept. 16 | Sunny | 34° /18° | 0 mm | 1.5 | |
| Sept. 17 | Sunny | 35° /19° | 0 mm | 0 | |
| Sept. 18 | Sunny | 33° /18° | 0 mm | 6 | |
| Sept. 19 |  Patchy rain possible | 31° /18° | 0.8 mm | 5 | |
| Sept. 20 |  Mist | 28° /17° | 0.1 mm | 5 | |
| Sept. 21 | Patchy rain possible | 23° /14° | 0.6 mm | 4 | |
| Sept. 22 |  Moderate rain | 23° /14° | 7.9 mm | 4 | |
| Sept. 23 | Moderate rain | 21° /16° | 7.5 mm | 4 | |
| Sept. 24 | Sunny | 26° /13° | 0 mm | 5 | |
| Sept. 25 | Partly cloudy | 22° /12° | 0 mm | 5 | |
| Sept. 26 | Patchy rain possible | 24° /14° | 2 mm | 4 | |
| Sept. 27 | Partly cloudy | 25° /14° | 5.9 mm | 6 | |
| Sept. 28 | Partly cloudy | 22° /14° | 6.6 mm | 6 | |
| Sept. 29 | Sunny | 24° /13° | 0 mm | 6 | |
| Sept. 30 | Fog | 25° /13° | 0 mm | 6 | |
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Cincinnati in September - FAQ
September rainfall patterns in Cincinnati
UV exposure in Cincinnati during September
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