Rockwood, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47 °F (low) to 69.3 °F (high). Annual precipitation averages 61.5 Inches. Rockwood 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 | 27.8 °F | 47.4 °F | 5.36 in. |
| February | 30.6 °F | 51.9 °F | 5.63 in. |
| March | 36.8 °F | 60.8 °F | 5.67 in. |
| April | 44.9 °F | 70.4 °F | 5.52 in. |
| May | 54.8 °F | 78.1 °F | 4.82 in. |
| June | 62.9 °F | 84.6 °F | 4.96 in. |
| July | 66.9 °F | 87.5 °F | 6.51 in. |
| August | 65.5 °F | 87.1 °F | 3.91 in. |
| September | 59.3 °F | 82.1 °F | 4.47 in. |
| October | 47.0 °F | 71.3 °F | 3.4 in. |
| November | 36.2 °F | 59.8 °F | 4.55 in. |
| December | 31.1 °F | 50.5 °F | 6.68 in. |
| Annual | 47 °F | 69.3 °F | 61.48 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |