Benton, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.4 °C (low) to 24.4 °C (high). Annual precipitation averages 1358.9 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 | 13.6 °C | 122.43 mm |
| February | 3.7 °C | 15.8 °C | 118.11 mm |
| March | 7.6 °C | 20.2 °C | 129.03 mm |
| April | 11.7 °C | 24.4 °C | 129.54 mm |
| May | 17 °C | 28.3 °C | 110.24 mm |
| June | 21.2 °C | 32.1 °C | 117.09 mm |
| July | 22.9 °C | 33.9 °C | 94.23 mm |
| August | 22.4 °C | 34.3 °C | 76.71 mm |
| September | 18.8 °C | 31.3 °C | 98.81 mm |
| October | 12.2 °C | 25.3 °C | 116.84 mm |
| November | 6.6 °C | 19.2 °C | 108.97 mm |
| December | 2.9 °C | 14.6 °C | 136.91 mm |
| Annual | 12.4 °C | 24.4 °C | 1358.91 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 |