Maynardville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.7 °F (low) to 68.2 °F (high). Annual precipitation averages 52.1 Inches. Maynardville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.2 °F | 46.1 °F | 4.75 in. |
| February | 30.3 °F | 50.5 °F | 4.88 in. |
| March | 36.4 °F | 59.7 °F | 4.82 in. |
| April | 44.9 °F | 69.6 °F | 4.86 in. |
| May | 54.5 °F | 77.3 °F | 4.25 in. |
| June | 62.5 °F | 83.7 °F | 4.29 in. |
| July | 66.3 °F | 86.5 °F | 5.17 in. |
| August | 65.2 °F | 85.9 °F | 3.33 in. |
| September | 59.0 °F | 81.1 °F | 3.64 in. |
| October | 46.9 °F | 70.3 °F | 3.2 in. |
| November | 36.0 °F | 58.6 °F | 3.88 in. |
| December | 30.6 °F | 49.2 °F | 5.05 in. |
| Annual | 46.7 °F | 68.2 °F | 52.12 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |