Des Arc, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.1 °C (low) to 22.1 °C (high). Annual precipitation averages 1262.9 Millimeters. Des Arc is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.3 °C | 9.2 °C | 92.96 mm |
| February | 1.5 °C | 12.1 °C | 101.85 mm |
| March | 5.7 °C | 17.1 °C | 125.98 mm |
| April | 10.8 °C | 22.5 °C | 139.7 mm |
| May | 16.2 °C | 27 °C | 135.13 mm |
| June | 20.8 °C | 31.3 °C | 79.25 mm |
| July | 22.4 °C | 33 °C | 81.03 mm |
| August | 21.5 °C | 32.7 °C | 69.34 mm |
| September | 17.3 °C | 29.3 °C | 82.8 mm |
| October | 10.7 °C | 23.6 °C | 107.7 mm |
| November | 5.2 °C | 16.3 °C | 113.03 mm |
| December | 1.3 °C | 10.8 °C | 134.11 mm |
| Annual | 11.1 °C | 22.1 °C | 1262.88 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |