Magnolia, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.7 °F (low) to 77.5 °F (high). Annual precipitation averages 67.6 Inches. Magnolia is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.8 °F | 60.0 °F | 6.71 in. |
| February | 40.9 °F | 64.2 °F | 5.79 in. |
| March | 47.3 °F | 71.3 °F | 5.99 in. |
| April | 53.5 °F | 77.4 °F | 6.04 in. |
| May | 61.7 °F | 84.4 °F | 4.73 in. |
| June | 68.7 °F | 90.1 °F | 5.98 in. |
| July | 70.9 °F | 91.7 °F | 6.69 in. |
| August | 70.7 °F | 91.8 °F | 6.4 in. |
| September | 65.9 °F | 87.8 °F | 4.52 in. |
| October | 54.7 °F | 79.9 °F | 4.29 in. |
| November | 44.8 °F | 69.2 °F | 4.66 in. |
| December | 39.7 °F | 62.0 °F | 5.77 in. |
| Annual | 54.7 °F | 77.5 °F | 67.57 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |