Jonesboro, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.4 °F (low) to 76.8 °F (high). Annual precipitation averages 57.1 Inches. Jonesboro is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.4 °F | 57.4 °F | 5.69 in. |
| February | 38.1 °F | 61.6 °F | 5.08 in. |
| March | 44.9 °F | 69.5 °F | 5.21 in. |
| April | 52.1 °F | 76.6 °F | 5.59 in. |
| May | 61.3 °F | 84.4 °F | 4.77 in. |
| June | 68.7 °F | 91.1 °F | 4.6 in. |
| July | 71.5 °F | 92.8 °F | 3.96 in. |
| August | 70.7 °F | 93.8 °F | 3.57 in. |
| September | 64.3 °F | 88.8 °F | 3.8 in. |
| October | 53.0 °F | 79.0 °F | 4.29 in. |
| November | 43.1 °F | 67.5 °F | 4.92 in. |
| December | 37.1 °F | 59.4 °F | 5.57 in. |
| Annual | 53.4 °F | 76.8 °F | 57.05 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |