Hornersville, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.6 °F (low) to 70.2 °F (high). Annual precipitation averages 52.1 Inches. Hornersville 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 | 29.1 °F | 45.6 °F | 3.57 in. |
| February | 32.5 °F | 50.8 °F | 4.41 in. |
| March | 40.2 °F | 59.9 °F | 4.97 in. |
| April | 49.8 °F | 71.0 °F | 5.32 in. |
| May | 60.5 °F | 80.0 °F | 5.32 in. |
| June | 68.6 °F | 88.2 °F | 3.63 in. |
| July | 71.8 °F | 90.7 °F | 4.35 in. |
| August | 69.6 °F | 89.7 °F | 3.51 in. |
| September | 61.9 °F | 84.0 °F | 3.25 in. |
| October | 50.2 °F | 73.5 °F | 4.06 in. |
| November | 40.0 °F | 59.7 °F | 4.84 in. |
| December | 32.6 °F | 49.0 °F | 4.86 in. |
| Annual | 50.6 °F | 70.2 °F | 52.09 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |