Sweet Home, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.5 °F (low) to 72.5 °F (high). Annual precipitation averages 52.7 Inches. Sweet Home 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.2 °F | 50.4 °F | 3.95 in. |
| February | 34.4 °F | 55.2 °F | 4.19 in. |
| March | 41.9 °F | 63.7 °F | 5.08 in. |
| April | 50.6 °F | 72.8 °F | 5.67 in. |
| May | 60.6 °F | 80.5 °F | 5.34 in. |
| June | 68.7 °F | 88.2 °F | 3.56 in. |
| July | 71.9 °F | 91.9 °F | 3.61 in. |
| August | 70.5 °F | 91.5 °F | 3.25 in. |
| September | 63.1 °F | 85.4 °F | 3.29 in. |
| October | 50.9 °F | 74.8 °F | 4.47 in. |
| November | 40.5 °F | 62.2 °F | 4.91 in. |
| December | 33.4 °F | 53.2 °F | 5.4 in. |
| Annual | 51.5 °F | 72.5 °F | 52.72 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 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 |