Finley, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 21 °C (high). Annual precipitation averages 1364.2 Millimeters. Finley is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.6 °C | 7.8 °C | 101.35 mm |
| February | 0.2 °C | 10.4 °C | 114.05 mm |
| March | 4.5 °C | 15.5 °C | 130.05 mm |
| April | 9.7 °C | 21.4 °C | 132.08 mm |
| May | 15.4 °C | 26.2 °C | 140.46 mm |
| June | 19.8 °C | 30.5 °C | 116.33 mm |
| July | 21.6 °C | 32 °C | 101.09 mm |
| August | 20.4 °C | 31.6 °C | 81.28 mm |
| September | 16.3 °C | 28.5 °C | 90.42 mm |
| October | 9.7 °C | 22.7 °C | 104.39 mm |
| November | 4.2 °C | 15.4 °C | 118.11 mm |
| December | 0.2 °C | 9.7 °C | 134.62 mm |
| Annual | 10 °C | 21 °C | 1364.23 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |