Jonesboro, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 21.2 °C (high). Annual precipitation averages 1321 Millimeters. Jonesboro 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 | -1.7 °C | 7.9 °C | 95.25 mm |
| February | 0.3 °C | 10.7 °C | 103.63 mm |
| March | 4.3 °C | 15.7 °C | 128.52 mm |
| April | 9.6 °C | 21.6 °C | 141.73 mm |
| May | 15.3 °C | 26.6 °C | 131.83 mm |
| June | 19.9 °C | 31.2 °C | 88.65 mm |
| July | 21.8 °C | 32.4 °C | 99.31 mm |
| August | 20.7 °C | 32.1 °C | 92.96 mm |
| September | 16.5 °C | 28.8 °C | 85.6 mm |
| October | 9.8 °C | 22.9 °C | 102.87 mm |
| November | 4.2 °C | 15.4 °C | 124.71 mm |
| December | 0.1 °C | 9.6 °C | 125.98 mm |
| Annual | 10.1 °C | 21.2 °C | 1321.04 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |