Horatio, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.8 °F (low) to 74.4 °F (high). Annual precipitation averages 53.9 Inches. Horatio is located in USDA Plant Hardiness Zone 8a. 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 | 30.9 °F | 54.2 °F | 3.94 in. |
| February | 34.3 °F | 58.4 °F | 4.1 in. |
| March | 41.3 °F | 66.3 °F | 4.85 in. |
| April | 49.1 °F | 74.0 °F | 5.45 in. |
| May | 59.2 °F | 81.0 °F | 6.03 in. |
| June | 67.4 °F | 88.5 °F | 4.14 in. |
| July | 70.6 °F | 92.6 °F | 3.87 in. |
| August | 69.4 °F | 93.2 °F | 2.85 in. |
| September | 62.6 °F | 87.1 °F | 4.24 in. |
| October | 50.5 °F | 76.4 °F | 4.8 in. |
| November | 40.4 °F | 64.9 °F | 4.49 in. |
| December | 33.5 °F | 56.0 °F | 5.17 in. |
| Annual | 50.8 °F | 74.4 °F | 53.93 in. |
| 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |