Ethridge, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 20.9 °C (high). Annual precipitation averages 1510.1 Millimeters. Ethridge 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 | -1.8 °C | 9.1 °C | 122.17 mm |
| February | -0.3 °C | 11.4 °C | 134.62 mm |
| March | 3.3 °C | 16.3 °C | 144.53 mm |
| April | 8.1 °C | 21.7 °C | 139.45 mm |
| May | 13.5 °C | 25.4 °C | 138.18 mm |
| June | 17.5 °C | 29.1 °C | 121.92 mm |
| July | 19.5 °C | 31.1 °C | 125.48 mm |
| August | 18.8 °C | 30.8 °C | 114.3 mm |
| September | 15.1 °C | 28.1 °C | 113.79 mm |
| October | 8.8 °C | 22.2 °C | 97.54 mm |
| November | 3.2 °C | 15.8 °C | 105.92 mm |
| December | -0.4 °C | 10.2 °C | 152.15 mm |
| Annual | 8.8 °C | 20.9 °C | 1510.05 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |