Greenway, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 20.9 °C (high). Annual precipitation averages 1276.1 Millimeters. Greenway 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 | -2 °C | 7.1 °C | 88.9 mm |
| February | -0.2 °C | 9.9 °C | 100.33 mm |
| March | 4.2 °C | 15.2 °C | 122.43 mm |
| April | 9.6 °C | 21.5 °C | 141.48 mm |
| May | 15.4 °C | 26.5 °C | 132.08 mm |
| June | 20 °C | 31 °C | 88.65 mm |
| July | 21.9 °C | 32.4 °C | 102.36 mm |
| August | 20.6 °C | 31.8 °C | 76.96 mm |
| September | 16.2 °C | 28.6 °C | 83.82 mm |
| October | 9.6 °C | 22.7 °C | 104.14 mm |
| November | 4 °C | 14.9 °C | 117.09 mm |
| December | -0.2 °C | 8.8 °C | 117.86 mm |
| Annual | 9.9 °C | 20.9 °C | 1276.1 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |