Dyess, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.6 °C (low) to 21.7 °C (high). Annual precipitation averages 1340.4 Millimeters. Dyess 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 | -0.9 °C | 8.3 °C | 100.33 mm |
| February | 0.8 °C | 11.2 °C | 110.24 mm |
| March | 5.1 °C | 16.2 °C | 131.57 mm |
| April | 10.2 °C | 22.1 °C | 143.76 mm |
| May | 16.1 °C | 27 °C | 134.11 mm |
| June | 20.6 °C | 31.5 °C | 99.57 mm |
| July | 22.3 °C | 32.7 °C | 99.82 mm |
| August | 20.9 °C | 32.2 °C | 80.77 mm |
| September | 16.8 °C | 29.3 °C | 87.12 mm |
| October | 10.3 °C | 23.5 °C | 101.6 mm |
| November | 4.8 °C | 15.9 °C | 116.33 mm |
| December | 0.7 °C | 10.3 °C | 135.13 mm |
| Annual | 10.6 °C | 21.7 °C | 1340.35 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |