Athens, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.4 °C (low) to 21.1 °C (high). Annual precipitation averages 1534.7 Millimeters. Athens is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.2 °C | 8.9 °C | 140.72 mm |
| February | -0.8 °C | 11.4 °C | 129.29 mm |
| March | 2.8 °C | 16.3 °C | 143 mm |
| April | 7.4 °C | 21.6 °C | 133.86 mm |
| May | 12.8 °C | 25.8 °C | 120.14 mm |
| June | 17.3 °C | 29.6 °C | 131.83 mm |
| July | 19.6 °C | 31.2 °C | 146.56 mm |
| August | 18.9 °C | 30.9 °C | 105.16 mm |
| September | 15.2 °C | 28.3 °C | 119.38 mm |
| October | 8.2 °C | 22.3 °C | 87.38 mm |
| November | 2 °C | 15.8 °C | 125.22 mm |
| December | -0.5 °C | 10.7 °C | 152.15 mm |
| Annual | 8.4 °C | 21.1 °C | 1534.69 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |