Friendsville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.3 °F (low) to 70 °F (high). Annual precipitation averages 56.4 Inches. Friendsville 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 | 28.8 °F | 48.0 °F | 5.05 in. |
| February | 31.6 °F | 52.5 °F | 5.3 in. |
| March | 38.2 °F | 61.3 °F | 5.08 in. |
| April | 46.7 °F | 70.8 °F | 5.06 in. |
| May | 55.9 °F | 78.8 °F | 4.12 in. |
| June | 64.3 °F | 85.3 °F | 4.69 in. |
| July | 68.3 °F | 88.3 °F | 6.25 in. |
| August | 67.1 °F | 87.7 °F | 3.63 in. |
| September | 60.8 °F | 83.1 °F | 4.19 in. |
| October | 48.5 °F | 72.2 °F | 3.24 in. |
| November | 37.1 °F | 60.4 °F | 4.22 in. |
| December | 32.2 °F | 51.2 °F | 5.52 in. |
| Annual | 48.3 °F | 70 °F | 56.35 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |