Lake Tansi, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.8 °F (low) to 66 °F (high). Annual precipitation averages 60.8 Inches. Lake Tansi is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.4 °F | 44.3 °F | 5.51 in. |
| February | 28.8 °F | 48.5 °F | 5.52 in. |
| March | 35.1 °F | 56.7 °F | 5.49 in. |
| April | 43.9 °F | 66.7 °F | 5.64 in. |
| May | 52.7 °F | 74.4 °F | 5.2 in. |
| June | 59.9 °F | 81.2 °F | 5.21 in. |
| July | 64.0 °F | 84.2 °F | 5.69 in. |
| August | 62.5 °F | 83.7 °F | 3.92 in. |
| September | 56.2 °F | 78.7 °F | 4.13 in. |
| October | 44.6 °F | 68.8 °F | 3.59 in. |
| November | 34.7 °F | 56.9 °F | 4.55 in. |
| December | 29.4 °F | 47.5 °F | 6.32 in. |
| Annual | 44.8 °F | 66 °F | 60.77 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |