Powells Crossroads, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.8 °F (low) to 71 °F (high). Annual precipitation averages 58.2 Inches. Powells Crossroads is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.9 °F | 49.6 °F | 4.93 in. |
| February | 33.0 °F | 54.2 °F | 5.21 in. |
| March | 39.3 °F | 62.8 °F | 5.33 in. |
| April | 47.2 °F | 72.3 °F | 5.03 in. |
| May | 56.5 °F | 79.2 °F | 4.24 in. |
| June | 64.5 °F | 85.6 °F | 5.58 in. |
| July | 68.3 °F | 88.6 °F | 4.97 in. |
| August | 67.4 °F | 88.5 °F | 3.97 in. |
| September | 60.9 °F | 83.6 °F | 4.1 in. |
| October | 48.5 °F | 73.1 °F | 3.46 in. |
| November | 37.8 °F | 61.5 °F | 5.12 in. |
| December | 32.7 °F | 52.7 °F | 6.3 in. |
| Annual | 48.8 °F | 71 °F | 58.24 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |