Jacksonville, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.7 °F (low) to 72.3 °F (high). Annual precipitation averages 52.8 Inches. Jacksonville is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.2 °F | 50.0 °F | 3.85 in. |
| February | 33.2 °F | 54.8 °F | 4.1 in. |
| March | 41.1 °F | 63.4 °F | 5.08 in. |
| April | 49.8 °F | 72.7 °F | 5.59 in. |
| May | 59.8 °F | 80.3 °F | 5.62 in. |
| June | 68.1 °F | 88.3 °F | 3.56 in. |
| July | 71.4 °F | 91.9 °F | 3.57 in. |
| August | 69.8 °F | 91.4 °F | 3.2 in. |
| September | 62.2 °F | 85.3 °F | 3.51 in. |
| October | 50.0 °F | 74.8 °F | 4.42 in. |
| November | 39.5 °F | 61.9 °F | 4.94 in. |
| December | 32.7 °F | 52.5 °F | 5.4 in. |
| Annual | 50.7 °F | 72.3 °F | 52.84 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |