Ridgetop, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.3 °F (low) to 67.9 °F (high). Annual precipitation averages 53.6 Inches. Ridgetop 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 | 26.2 °F | 44.5 °F | 4.14 in. |
| February | 29.7 °F | 49.3 °F | 4.62 in. |
| March | 37.2 °F | 58.3 °F | 4.92 in. |
| April | 46.8 °F | 68.8 °F | 5.12 in. |
| May | 56.5 °F | 77.0 °F | 5.54 in. |
| June | 64.0 °F | 84.2 °F | 4.36 in. |
| July | 67.2 °F | 87.0 °F | 4.64 in. |
| August | 65.6 °F | 87.9 °F | 3.78 in. |
| September | 59.1 °F | 81.4 °F | 4.06 in. |
| October | 47.2 °F | 70.4 °F | 3.72 in. |
| November | 37.3 °F | 58.0 °F | 3.77 in. |
| December | 30.5 °F | 48.1 °F | 4.92 in. |
| Annual | 47.3 °F | 67.9 °F | 53.59 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 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |