Waynesboro, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53 °F (low) to 77.3 °F (high). Annual precipitation averages 60.4 Inches. Waynesboro is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.7 °F | 59.3 °F | 6.06 in. |
| February | 38.9 °F | 63.6 °F | 5.42 in. |
| March | 45.0 °F | 71.1 °F | 5.81 in. |
| April | 51.4 °F | 77.8 °F | 4.84 in. |
| May | 60.0 °F | 84.8 °F | 4.19 in. |
| June | 67.8 °F | 90.1 °F | 5.81 in. |
| July | 70.5 °F | 92.1 °F | 5.46 in. |
| August | 69.9 °F | 91.9 °F | 5.07 in. |
| September | 64.8 °F | 87.9 °F | 4.2 in. |
| October | 52.5 °F | 79.2 °F | 3.4 in. |
| November | 42.0 °F | 68.6 °F | 4.21 in. |
| December | 37.5 °F | 61.2 °F | 5.89 in. |
| Annual | 53 °F | 77.3 °F | 60.36 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 |