Meridian, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.4 °F (low) to 75.9 °F (high). Annual precipitation averages 58.5 Inches. Meridian is located in USDA Plant Hardiness Zone 8b. 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 | 34.6 °F | 56.9 °F | 5.77 in. |
| February | 37.7 °F | 61.6 °F | 5.4 in. |
| March | 44.4 °F | 69.2 °F | 5.87 in. |
| April | 51.1 °F | 76.4 °F | 5.76 in. |
| May | 59.8 °F | 83.2 °F | 4.14 in. |
| June | 67.5 °F | 89.4 °F | 5.02 in. |
| July | 70.0 °F | 91.3 °F | 5.35 in. |
| August | 69.1 °F | 91.2 °F | 4.56 in. |
| September | 63.9 °F | 87.2 °F | 3.22 in. |
| October | 51.9 °F | 78.0 °F | 3.41 in. |
| November | 41.6 °F | 67.0 °F | 4.47 in. |
| December | 36.7 °F | 59.1 °F | 5.57 in. |
| Annual | 52.4 °F | 75.9 °F | 58.54 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |