Hamilton County (Cincinnati)
September
Weather in Hamilton County, Ohio for September 2026
Your guide to Hamilton County weather in September - trends and predictions
Until now, September 2026 in Hamilton County has been significantly warmer than historical averages.
The forecast for the next days in Hamilton County predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Hamilton County at the beginning of September is 30 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.4 °F by the end of September.
The climate of Hamilton County in September is notably wet, with an average of 13 rainy days, and a total of 114.2 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
27°/15°
Temperatures
12 km/h
Avg max wind
66 %
Avg humidity
Hamilton County Weather September
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Temperatures trend during September in Hamilton County
See the weather trend as well as the moving average line
September weather in Hamilton County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 31° /16° | 0.4 mm | 7 | |
| Sept. 2 |  Sunny | 32° /16° | 0 mm | 7 | |
| Sept. 3 | Sunny | 30° /16° | 1.7 mm | 7 | |
| Sept. 4 | Sunny | 30° /18° | 16.2 mm | 7 | |
| Sept. 5 |  Moderate or heavy rain shower | 30° /18° | 8.5 mm | 7 | |
| Sept. 6 | Sunny | 29° /16° | 5.8 mm | 7 | |
| Sept. 7 | Sunny | 28° /14° | 0.1 mm | 7 | |
| Sept. 8 | Sunny | 28° /13° | 0.7 mm | 6 | |
| Sept. 9 | Sunny | 34° /21° | 2.5 mm | 7.5 | |
| Sept. 10 |  Light rain shower | 25° /21° | 13.8 mm | 5.4 | |
| Sept. 11 |  Overcast | 28° /19° | 3.2 mm | 5.9 | |
| Sept. 12 | Sunny | 31° /21° | 0 mm | 3.9 | |
| Sept. 13 | Overcast | 31° /21° | 0 mm | 7 | |
| Sept. 14 | Sunny | 33° /23° | 0 mm | 8 | |
| Sept. 15 | Patchy rain possible | 34° /23° | 3.6 mm | 8 | |
| Sept. 16 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 17 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 18 | Sunny | 35° /21° | 0 mm | 8 | |
| Sept. 19 | Sunny | 28° /18° | 2.8 mm | 7 | |
| Sept. 20 | Sunny | 30° /15° | 2.9 mm | 8 | |
| Sept. 21 | Sunny | 36° /22° | 0.2 mm | 9 | |
| Sept. 22 | Patchy rain possible | 24° /17° | 0.7 mm | 6 | |
| Sept. 23 | Partly cloudy | 24° /13° | 10 mm | 6 | |
| Sept. 24 | Sunny | 24° /14° | 27.7 mm | 5 | |
| Sept. 25 |  Heavy rain at times | 24° /15° | 0.7 mm | 5 | |
| Sept. 26 |  Mist | 24° /13° | 0.3 mm | 6 | |
| Sept. 27 | Partly cloudy | 24° /14° | 4.7 mm | 6 | |
| Sept. 28 | Partly cloudy | 24° /14° | 5.3 mm | 6 | |
| Sept. 29 | Sunny | 25° /14° | 0 mm | 6 | |
| Sept. 30 | Partly cloudy | 26° /14° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Hamilton County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Hamilton County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Hamilton County in September - FAQ
What are the expected maximum and minimum temperatures in Hamilton County during September?
During September, expect a variety of temperatures with highs around 27° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hamilton County during September?
Significant rainfall exceeding 114.2 mm is expected in Hamilton County during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hamilton County during September?
The average wind speed in Hamilton County during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hamilton County
Explore the daily rainfall trends and prepare for Hamilton Countys September weather 💧
Typically, Hamilton County has 13 rainy days in September with a total of 114.2 mm of rainfall.
UV exposure in Hamilton County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Hamilton County?Get accurate weather forecasts for Hamilton County, located at latitude 39.127 and longitude -84.514. Stay updated with localized weather information tailored for Hamilton County.
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