Dierks, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 23.6 °C (high). Annual precipitation averages 1355.1 Millimeters. Dierks is located in USDA Plant Hardiness Zone 8a. 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 | -1.1 °C | 12.1 °C | 100.58 mm |
| February | 0.7 °C | 14.4 °C | 94.74 mm |
| March | 4.4 °C | 18.9 °C | 123.7 mm |
| April | 8.9 °C | 23.6 °C | 133.6 mm |
| May | 14.5 °C | 27.5 °C | 144.78 mm |
| June | 19.1 °C | 31.7 °C | 99.06 mm |
| July | 20.8 °C | 34.1 °C | 110.49 mm |
| August | 20.3 °C | 34.3 °C | 77.22 mm |
| September | 16.5 °C | 30.7 °C | 98.81 mm |
| October | 9.7 °C | 24.7 °C | 120.65 mm |
| November | 4.1 °C | 17.9 °C | 117.86 mm |
| December | 0.6 °C | 13.2 °C | 133.6 mm |
| Annual | 9.9 °C | 23.6 °C | 1355.09 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 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 |