Montgomery County (Clarksville)
September
Weather in Montgomery County, Tennessee for September 2026
Your guide to Montgomery County weather in September - trends and predictions
Heat Advisory - See hour by hour.
So far, September 2026 in Montgomery County shows a warmer trend than usual by 4.8 °F.
The forecast for the next days in Montgomery County predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Montgomery County 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.
Montgomery County in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 231.7 mm.
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Temperatures
Rain 🌧️
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12
Dry days
18
Rainy days
0
Snow days
28°/16°
Temperatures
15 km/h
Avg max wind
68 %
Avg humidity
Montgomery County Weather September
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Temperatures trend during September in Montgomery County
See the weather trend as well as the moving average line
September weather in Montgomery County day by day
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| 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 Montgomery 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 Montgomery County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Montgomery County in September - FAQ
What are the expected maximum and minimum temperatures in Montgomery County 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 Montgomery County during September?
Significant rainfall exceeding 231.7 mm is expected in Montgomery County during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Montgomery County during September?
The average wind speed in Montgomery County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Montgomery County
Explore the daily rainfall trends and prepare for Montgomery Countys September weather 💧
Typically, Montgomery County has 18 rainy days in September with a total of 231.7 mm of rainfall.
UV exposure in Montgomery County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Montgomery County?Get accurate weather forecasts for Montgomery County, located at latitude 36.53 and longitude -87.359. Stay updated with localized weather information tailored for Montgomery County.
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