Hornbeak, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.9 °F (low) to 69.5 °F (high). Annual precipitation averages 52.7 Inches. Hornbeak is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.3 °F | 46.4 °F | 3.9 in. |
| February | 29.8 °F | 50.9 °F | 4.3 in. |
| March | 38.0 °F | 60.5 °F | 5.08 in. |
| April | 47.2 °F | 69.8 °F | 5.34 in. |
| May | 57.7 °F | 78.8 °F | 5.67 in. |
| June | 65.7 °F | 86.2 °F | 4.15 in. |
| July | 69.0 °F | 89.4 °F | 4.05 in. |
| August | 66.7 °F | 88.5 °F | 3.03 in. |
| September | 58.8 °F | 82.8 °F | 3.75 in. |
| October | 47.1 °F | 72.1 °F | 3.98 in. |
| November | 37.1 °F | 60.0 °F | 4.38 in. |
| December | 30.0 °F | 49.0 °F | 5.07 in. |
| Annual | 47.9 °F | 69.5 °F | 52.7 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |