Grant County (Williamstown)
September
Weather in Grant County, Kentucky for September 2026
Your guide to Grant County weather in September - trends and predictions
In general, the average temperature in Grant County at the beginning of September is 23.4 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 25 °F by the end of September.
Grant County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 189.7 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
26°/16°
Temperatures
11 km/h
Avg max wind
69 %
Avg humidity
Grant County Weather September
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Temperatures trend during September in Grant County
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September weather in Grant County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 26° /14° | 0 mm | 9 | |
| Sept. 2 |  Cloudy | 26° /14° | 0 mm | 9 | |
| Sept. 3 | Cloudy | 22° /15° | 0 mm | 8 | |
| Sept. 4 |  Moderate or heavy rain shower | 21° /15° | 51.8 mm | 3 | |
| Sept. 5 |  Heavy rain at times | 27° /15° | 8.8 mm | 7 | |
| Sept. 6 | Moderate or heavy rain shower | 20° /12° | 35.7 mm | 5 | |
| Sept. 7 |  Fog | 22° /8° | 0 mm | 8 | |
| Sept. 8 |  Sunny | 23° /9° | 0 mm | 8 | |
| Sept. 9 |  Overcast | 22° /11° | 0 mm | 8 | |
| Sept. 10 | Partly cloudy | 26° /11° | 0 mm | 8 | |
| Sept. 11 | Overcast | 26° /16° | 0 mm | 8 | |
| Sept. 12 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 13 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 14 | Overcast | 32° /20° | 0 mm | 7 | |
| Sept. 15 | Overcast | 29° /19° | 0 mm | 7 | |
| Sept. 16 | Cloudy | 30° /21° | 0 mm | 7 | |
| Sept. 17 | Cloudy | 27° /15° | 0 mm | 7 | |
| Sept. 18 | Overcast | 28° /18° | 0 mm | 6 | |
| Sept. 19 | Partly cloudy | 32° /17° | 0 mm | 6 | |
| Sept. 20 | Overcast | 28° /17° | 0 mm | 5 | |
| Sept. 21 |  Thundery outbreaks possible | 25° /20° | 0 mm | 6 | |
| Sept. 22 | Thundery outbreaks possible | 28° /19° | 10.6 mm | 4 | |
| Sept. 23 | Moderate or heavy rain shower | 26° /18° | 25.5 mm | 3 | |
| Sept. 24 | Moderate or heavy rain shower | 24° /20° | 49.7 mm | 1 | |
| Sept. 25 |  Moderate rain | 23° /16° | 7.6 mm | 3 | |
| Sept. 26 | Fog | 21° /13° | 0 mm | 5 | |
| Sept. 27 | Mist | 20° /15° | 0 mm | 4 | |
| Sept. 28 | Fog | 29° /12° | 0 mm | 6 | |
| Sept. 29 | Sunny | 30° /16° | 0 mm | 5 | |
| Sept. 30 | Cloudy | 28° /20° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Grant 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 Grant County forecast closer to your planned date for the most up-to-date weather information.
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Grant County in September - FAQ
What are the expected maximum and minimum temperatures in Grant County during September?
During September, expect a variety of temperatures with highs around 26° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grant County during September?
Significant rainfall exceeding 189.7 mm is expected in Grant County during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Grant County during September?
The average wind speed in Grant County during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Grant County
Explore the daily rainfall trends and prepare for Grant Countys September weather 💧
Typically, Grant County has 7 rainy days in September with a total of 189.7 mm of rainfall.
UV exposure in Grant County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Grant County?Get accurate weather forecasts for Grant County, located at latitude 38.638 and longitude -84.561. Stay updated with localized weather information tailored for Grant County.
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