Richton, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.4 °F (low) to 77.8 °F (high). Annual precipitation averages 60.6 Inches. Richton 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 | 36.2 °F | 60.2 °F | 6.18 in. |
| February | 39.3 °F | 64.3 °F | 5.57 in. |
| March | 45.4 °F | 71.3 °F | 5.78 in. |
| April | 52.0 °F | 78.0 °F | 4.93 in. |
| May | 60.5 °F | 85.0 °F | 4.3 in. |
| June | 67.9 °F | 90.3 °F | 5.25 in. |
| July | 70.5 °F | 92.0 °F | 6.21 in. |
| August | 70.1 °F | 92.0 °F | 5.01 in. |
| September | 65.1 °F | 88.6 °F | 4.12 in. |
| October | 53.1 °F | 80.1 °F | 3.48 in. |
| November | 42.6 °F | 69.5 °F | 4.02 in. |
| December | 37.9 °F | 62.1 °F | 5.71 in. |
| Annual | 53.4 °F | 77.8 °F | 60.56 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 |