Hernando, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 71.7 °F (high). Annual precipitation averages 56.1 Inches. Hernando 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 | 31.4 °F | 49.2 °F | 4.44 in. |
| February | 34.3 °F | 54.1 °F | 4.95 in. |
| March | 42.1 °F | 62.8 °F | 5.74 in. |
| April | 51.0 °F | 72.7 °F | 5.83 in. |
| May | 60.6 °F | 80.2 °F | 5.23 in. |
| June | 68.3 °F | 87.8 °F | 4.8 in. |
| July | 71.9 °F | 90.0 °F | 4.27 in. |
| August | 70.4 °F | 90.0 °F | 3.39 in. |
| September | 63.5 °F | 85.2 °F | 3.21 in. |
| October | 51.7 °F | 74.2 °F | 4.1 in. |
| November | 41.3 °F | 61.8 °F | 4.52 in. |
| December | 34.5 °F | 52.0 °F | 5.64 in. |
| Annual | 51.8 °F | 71.7 °F | 56.12 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |