Tusculum, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.2 °F (low) to 68.6 °F (high). Annual precipitation averages 45.3 Inches. Tusculum is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.2 °F | 47.4 °F | 3.69 in. |
| February | 29.0 °F | 51.6 °F | 3.66 in. |
| March | 35.2 °F | 59.9 °F | 4.03 in. |
| April | 43.2 °F | 69.7 °F | 4.17 in. |
| May | 52.6 °F | 77.4 °F | 4.13 in. |
| June | 61.1 °F | 83.4 °F | 4.29 in. |
| July | 64.8 °F | 86.2 °F | 5.05 in. |
| August | 63.5 °F | 85.6 °F | 3.77 in. |
| September | 57.4 °F | 80.9 °F | 2.97 in. |
| October | 44.9 °F | 71.4 °F | 2.47 in. |
| November | 35.0 °F | 59.5 °F | 3.02 in. |
| December | 30.0 °F | 50.4 °F | 4.03 in. |
| Annual | 45.2 °F | 68.6 °F | 45.28 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |