Winona, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.6 °F (low) to 73.1 °F (high). Annual precipitation averages 58.6 Inches. Winona 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 | 31.9 °F | 53.3 °F | 5.27 in. |
| February | 34.7 °F | 57.8 °F | 5.3 in. |
| March | 41.7 °F | 66.0 °F | 5.7 in. |
| April | 49.5 °F | 73.3 °F | 6.0 in. |
| May | 58.9 °F | 80.6 °F | 5.21 in. |
| June | 66.5 °F | 86.9 °F | 4.37 in. |
| July | 69.8 °F | 89.5 °F | 4.75 in. |
| August | 68.6 °F | 89.6 °F | 4.0 in. |
| September | 61.9 °F | 85.1 °F | 3.85 in. |
| October | 50.0 °F | 75.6 °F | 3.64 in. |
| November | 39.8 °F | 64.4 °F | 4.54 in. |
| December | 34.2 °F | 55.6 °F | 5.93 in. |
| Annual | 50.6 °F | 73.1 °F | 58.56 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 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |