Benton, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.8 °F (low) to 70.6 °F (high). Annual precipitation averages 58.1 Inches. Benton 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 | 29.1 °F | 49.2 °F | 5.37 in. |
| February | 31.6 °F | 53.6 °F | 4.86 in. |
| March | 38.0 °F | 62.1 °F | 5.52 in. |
| April | 46.0 °F | 71.4 °F | 4.9 in. |
| May | 55.7 °F | 79.1 °F | 4.47 in. |
| June | 63.9 °F | 85.7 °F | 4.82 in. |
| July | 67.7 °F | 88.8 °F | 5.84 in. |
| August | 66.4 °F | 88.3 °F | 4.0 in. |
| September | 59.8 °F | 83.3 °F | 4.66 in. |
| October | 47.3 °F | 72.8 °F | 3.26 in. |
| November | 36.0 °F | 61.2 °F | 4.69 in. |
| December | 31.9 °F | 52.0 °F | 5.66 in. |
| Annual | 47.8 °F | 70.6 °F | 58.05 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 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |