Clarksville (TN)
September
Weather in Clarksville, Tennessee for September 2026
Your guide to Clarksville weather in September - trends and predictions
Heat Advisory - See hour by hour.
So far, September 2026 in Clarksville shows a warmer trend than usual by 4.8 °F.
The forecast for the next days in Clarksville predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Clarksville at the beginning of September is 31.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 28 °F by the end of September.
Clarksville in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 231.7 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
More
12
Dry days
18
Rainy days
0
Snow days
28°/16°
Temperatures
15 km/h
Avg max wind
68 %
Avg humidity
Clarksville Weather September
Move between months or click on a day
Temperatures trend during September in Clarksville
See the weather trend as well as the moving average line
September weather in Clarksville day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 30° /17° | 1.5 mm | 7 | |
| Sept. 2 |  Cloudy | 33° /18° | 2.3 mm | 8 | |
| Sept. 3 |  Sunny | 32° /18° | 4 mm | 7 | |
| Sept. 4 |  Partly cloudy | 31° /21° | 2.8 mm | 7 | |
| Sept. 5 |  Moderate or heavy rain shower | 33° /20° | 22.8 mm | 8 | |
| Sept. 6 |  Patchy light rain with thunder | 31° /18° | 17.2 mm | 7 | |
| Sept. 7 | Sunny | 28° /15° | 0.5 mm | 7 | |
| Sept. 8 | Sunny | 29° /13° | 0 mm | 7 | |
| Sept. 9 | Overcast | 30° /15° | 0.6 mm | 7 | |
| Sept. 10 |  Mist | 31° /17° | 1 mm | 6 | |
| Sept. 11 | Cloudy | 31° /18° | 27.6 mm | 6 | |
| Sept. 12 |  Moderate rain | 28° /18° | 10.4 mm | 6 | |
| Sept. 13 | Fog | 29° /17° | 2.8 mm | 7 | |
| Sept. 14 | Sunny | 30° /20° | 1 mm | 7.9 | |
| Sept. 15 | Sunny | 37° /22° | 0 mm | 8 | |
| Sept. 16 | Overcast | 36° /26° | 0 mm | 7.6 | |
| Sept. 17 | Sunny | 36° /25° | 0 mm | 9 | |
| Sept. 18 | Sunny | 34° /20° | 0 mm | 7 | |
| Sept. 19 | Sunny | 34° /20° | 0.2 mm | 8 | |
| Sept. 20 |  Light rain shower | 28° /17° | 19 mm | 6 | |
| Sept. 21 | Sunny | 24° /13° | 0.1 mm | 6 | |
| Sept. 22 | Sunny | 26° /12° | 0 mm | 7 | |
| Sept. 23 | Cloudy | 25° /11° | 0 mm | 6 | |
| Sept. 24 | Sunny | 25° /12° | 0 mm | 7 | |
| Sept. 25 | Overcast | 26° /12° | 0 mm | 6 | |
| Sept. 26 | Sunny | 30° /15° | 0 mm | 7 | |
| Sept. 27 | Sunny | 31° /17° | 0 mm | 8 | |
| Sept. 28 |  Thundery outbreaks possible | 27° /16° | 18.7 mm | 6 | |
| Sept. 29 | Moderate rain at times | 28° /16° | 1.7 mm | 7 | |
| Sept. 30 | Fog | 29° /16° | 0.4 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Clarksville 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 Clarksville forecast closer to your planned date for the most up-to-date weather information.
Change Month
Clarksville in September - FAQ
What are the expected maximum and minimum temperatures in Clarksville during September?
During September, expect a variety of temperatures with highs around 28° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Clarksville during September?
Significant rainfall exceeding 231.7 mm is expected in Clarksville during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Clarksville during September?
The average wind speed in Clarksville during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Clarksville
Explore the daily rainfall trends and prepare for Clarksvilles September weather 💧
Typically, Clarksville has 18 rainy days in September with a total of 231.7 mm of rainfall.
UV exposure in Clarksville during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Clarksville weather pages
You are here
Where is Clarksville?Get accurate weather forecasts for Clarksville, located at latitude 36.53 and longitude -87.359. Stay updated with localized weather information tailored for Clarksville.
Found a mistake?
We appreciate your attention to details. Tell us here.