Elkton, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 21.6 °C (high). Annual precipitation averages 1494.3 Millimeters. Elkton 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 | -1.7 °C | 9.5 °C | 135.13 mm |
| February | -0.2 °C | 11.9 °C | 136.91 mm |
| March | 3.7 °C | 16.8 °C | 141.73 mm |
| April | 7.9 °C | 21.9 °C | 133.86 mm |
| May | 13.2 °C | 26.2 °C | 120.14 mm |
| June | 17.7 °C | 30 °C | 120.9 mm |
| July | 19.8 °C | 31.6 °C | 124.71 mm |
| August | 19 °C | 31.4 °C | 110.74 mm |
| September | 15.2 °C | 28.7 °C | 106.43 mm |
| October | 8.4 °C | 23.2 °C | 95.25 mm |
| November | 2.6 °C | 16.4 °C | 107.95 mm |
| December | -0.2 °C | 11.1 °C | 160.53 mm |
| Annual | 8.8 °C | 21.6 °C | 1494.28 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |