Westmoreland, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.6 °F (low) to 68 °F (high). Annual precipitation averages 53.3 Inches. Westmoreland 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 | 27.9 °F | 44.6 °F | 4.12 in. |
| February | 31.1 °F | 49.3 °F | 4.59 in. |
| March | 38.6 °F | 58.4 °F | 5.0 in. |
| April | 47.5 °F | 69.2 °F | 4.81 in. |
| May | 57.5 °F | 76.8 °F | 5.49 in. |
| June | 65.2 °F | 84.5 °F | 4.44 in. |
| July | 68.3 °F | 87.7 °F | 4.8 in. |
| August | 67.1 °F | 87.3 °F | 3.93 in. |
| September | 60.2 °F | 81.3 °F | 3.9 in. |
| October | 48.5 °F | 70.7 °F | 3.59 in. |
| November | 38.7 °F | 58.2 °F | 3.8 in. |
| December | 32.2 °F | 48.3 °F | 4.84 in. |
| Annual | 48.6 °F | 68 °F | 53.31 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 |