Hamilton County (Cincinnati)
September
Weather in Hamilton County for September 2025
Your guide to Hamilton County weather in September - trends and predictions
In general, the average temperature in Hamilton County at the beginning of September is 30.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.6 °F by the end of September.
Hamilton County sees moderate rainfall in September, averaging 6 rainy days.
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24
Dry days
6
Rainy days
0
Snow days
28°/14°
Temperatures
11 km/h
Avg max wind
65 %
Avg humidity
Hamilton County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  31° | 3 30° | 4  34° | 5  33° | 6  31° | 7  25° |
| 8 25° | 9 28° | 10 29° | 11  32° | 12 28° | 13 27° | 14 28° |
| 15 29° | 16 29° | 17 26° | 18 26° | 19 27° | 20 31° | 21 32° |
| 22 31° | 23 26° | 24 26° | 25 25° | 26 26° | 27  25° | 28 21° |
| 29 23° | 30 26° |
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Temperatures trend during September in Hamilton County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 32° /15° | 0.1 mm | 8 | |
| Sept. 2 | Mist | 31° /16° | 0 mm | 7 | |
| Sept. 3 | Sunny | 30° /14° | 0 mm | 7 | |
| Sept. 4 | Partly cloudy | 34° /17° | 0 mm | 9 | |
| Sept. 5 | Thundery outbreaks possible | 33° /19° | 0 mm | 8 | |
| Sept. 6 | Patchy rain possible | 31° /18° | 3.7 mm | 7 | |
| Sept. 7 | Overcast | 25° /13° | 0.2 mm | 6 | |
| Sept. 8 | Overcast | 25° /10° | 0 mm | 6 | |
| Sept. 9 | Overcast | 28° /13° | 0 mm | 7 | |
| Sept. 10 | Mist | 29° /13° | 0 mm | 7 | |
| Sept. 11 | Cloudy | 32° /14° | 0 mm | 8 | |
| Sept. 12 | Overcast | 28° /15° | 0 mm | 6 | |
| Sept. 13 | Mist | 27° /13° | 1.3 mm | 6 | |
| Sept. 14 | Sunny | 28° /13° | 0 mm | 8 | |
| Sept. 15 | Sunny | 29° /12° | 0 mm | 8 | |
| Sept. 16 | Overcast | 29° /13° | 0 mm | 7 | |
| Sept. 17 | Light rain shower | 26° /13° | 3.7 mm | 6 | |
| Sept. 18 | Mist | 26° /15° | 10.4 mm | 6 | |
| Sept. 19 | Mist | 27° /14° | 0 mm | 6 | |
| Sept. 20 | Partly cloudy | 31° /15° | 0 mm | 7 | |
| Sept. 21 | Overcast | 32° /19° | 0 mm | 7 | |
| Sept. 22 | Partly cloudy | 31° /17° | 3.6 mm | 8 | |
| Sept. 23 | Overcast | 26° /15° | 7.8 mm | 6 | |
| Sept. 24 | Cloudy | 26° /15° | 2.9 mm | 6 | |
| Sept. 25 | Overcast | 25° /16° | 0 mm | 5 | |
| Sept. 26 | Mist | 26° /16° | 0.9 mm | 6 | |
| Sept. 27 | Patchy light rain with thunder | 25° /17° | 11.7 mm | 6 | |
| Sept. 28 | Light rain shower | 21° /16° | 13.2 mm | 5 | |
| Sept. 29 | Fog | 23° /16° | 0 mm | 5 | |
| Sept. 30 | Fog | 26° /15° | 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.
Hamilton County in September - FAQ
What are the expected maximum and minimum temperatures in Hamilton County during September?
Enjoy moderate daytime temperatures of up to 28° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Hamilton County during September?
In September, Hamilton County can expect light to moderate rainfall, totaling 28 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Hamilton County during September?
The average wind speed in Hamilton County during September is 11 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 💧
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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