Marmaduke, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 21 °C (high). Annual precipitation averages 1289.6 Millimeters. Marmaduke is located in USDA Plant Hardiness Zone 7b. 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 | -1.8 °C | 7.6 °C | 94.49 mm |
| February | 0.1 °C | 10.4 °C | 102.11 mm |
| March | 4.3 °C | 15.4 °C | 122.94 mm |
| April | 9.7 °C | 21.6 °C | 138.18 mm |
| May | 15.6 °C | 26.4 °C | 130.3 mm |
| June | 20.1 °C | 31 °C | 88.39 mm |
| July | 21.9 °C | 32.4 °C | 101.09 mm |
| August | 20.6 °C | 31.8 °C | 86.61 mm |
| September | 16.3 °C | 28.7 °C | 86.87 mm |
| October | 9.7 °C | 22.8 °C | 101.35 mm |
| November | 4.2 °C | 15.2 °C | 118.11 mm |
| December | 0 °C | 9.2 °C | 119.13 mm |
| Annual | 10.1 °C | 21 °C | 1289.57 mm |
| 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |