Benton, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.1 °C (low) to 24.4 °C (high). Annual precipitation averages 1390.9 Millimeters. Benton is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °C | 14 °C | 130.56 mm |
| February | 3.9 °C | 16.5 °C | 135.13 mm |
| March | 7.2 °C | 20.8 °C | 146.81 mm |
| April | 11 °C | 24.7 °C | 109.22 mm |
| May | 16.3 °C | 28.8 °C | 93.98 mm |
| June | 20.8 °C | 31.8 °C | 109.22 mm |
| July | 22.1 °C | 33 °C | 137.67 mm |
| August | 21.7 °C | 32.9 °C | 108.2 mm |
| September | 18.8 °C | 30.4 °C | 108.71 mm |
| October | 12.2 °C | 25.4 °C | 71.88 mm |
| November | 5.9 °C | 19.6 °C | 106.68 mm |
| December | 3.3 °C | 15.3 °C | 132.84 mm |
| Annual | 12.1 °C | 24.4 °C | 1390.9 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |