Oppelo, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49 °F (low) to 72.4 °F (high). Annual precipitation averages 51.7 Inches. Oppelo 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 | 28.5 °F | 50.0 °F | 3.42 in. |
| February | 31.5 °F | 54.8 °F | 3.87 in. |
| March | 39.2 °F | 63.8 °F | 5.1 in. |
| April | 47.8 °F | 72.5 °F | 5.47 in. |
| May | 58.0 °F | 80.0 °F | 5.47 in. |
| June | 66.3 °F | 88.0 °F | 3.58 in. |
| July | 69.7 °F | 92.2 °F | 3.89 in. |
| August | 68.5 °F | 92.1 °F | 3.79 in. |
| September | 60.5 °F | 85.2 °F | 3.61 in. |
| October | 48.5 °F | 74.9 °F | 4.0 in. |
| November | 38.3 °F | 62.2 °F | 4.69 in. |
| December | 31.4 °F | 52.8 °F | 4.76 in. |
| Annual | 49 °F | 72.4 °F | 51.65 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |