Click on a day for an hourly weather forecast
The temperatures in Clarksville in September are comfortable with low of 16°C and and high up to 27°C.
You can expect about 3 to 8 days of rain in Clarksville during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Clarksville in September 2025.
If you’re planning to visit Clarksville in the near future, we highly recommend that you review the 14 day weather forecast for Clarksville before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / -2° | 8 | 17 | 6 | 114 mm | Awful | Clarksville in January |
| February | 8° / 0° | 8 | 15 | 6 | 182 mm | Awful | Clarksville in February |
| March | 14° / 5° | 9 | 19 | 3 | 154 mm | Bad | Clarksville in March |
| April | 20° / 9° | 8 | 22 | 1 | 165 mm | Ok | Clarksville in April |
| May | 25° / 15° | 9 | 22 | 0 | 165 mm | Good | Clarksville in May |
| June | 30° / 19° | 9 | 21 | 0 | 165 mm | Ok | Clarksville in June |
| July | 31° / 20° | 10 | 21 | 0 | 181 mm | Ok | Clarksville in July |
| August | 31° / 20° | 8 | 23 | 0 | 150 mm | Ok | Clarksville in August |
| September | 27° / 16° | 6 | 24 | 0 | 122 mm | Perfect | Clarksville in September |
| October | 21° / 11° | 6 | 25 | 0 | 133 mm | Good | Clarksville in October |
| November | 13° / 5° | 6 | 23 | 1 | 121 mm | Ok | Clarksville in November |
| December | 9° / 2° | 7 | 22 | 3 | 150 mm | Awful | Clarksville in December |