Hardy, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.5 °C (low) to 21.3 °C (high). Annual precipitation averages 1278.9 Millimeters. Hardy is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.1 °C | 8.4 °C | 89.66 mm |
| February | -1.4 °C | 11.1 °C | 90.17 mm |
| March | 2.9 °C | 16.1 °C | 120.14 mm |
| April | 7.9 °C | 21.8 °C | 137.16 mm |
| May | 13.5 °C | 26 °C | 137.67 mm |
| June | 18.3 °C | 30.6 °C | 92.71 mm |
| July | 20.2 °C | 32.5 °C | 96.27 mm |
| August | 19.2 °C | 32.3 °C | 101.35 mm |
| September | 14.8 °C | 28.4 °C | 98.81 mm |
| October | 8.2 °C | 22.7 °C | 98.55 mm |
| November | 2.6 °C | 15.5 °C | 115.82 mm |
| December | -1.4 °C | 9.7 °C | 100.58 mm |
| Annual | 8.5 °C | 21.3 °C | 1278.89 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |