New Madrid, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.2 °F (low) to 68.8 °F (high). Annual precipitation averages 51.3 Inches. New Madrid is located in USDA Plant Hardiness Zone 7b. 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 | 27.7 °F | 43.8 °F | 3.69 in. |
| February | 30.7 °F | 48.6 °F | 4.02 in. |
| March | 38.8 °F | 58.4 °F | 4.8 in. |
| April | 48.6 °F | 69.9 °F | 5.36 in. |
| May | 59.1 °F | 78.9 °F | 5.62 in. |
| June | 67.3 °F | 87.2 °F | 4.13 in. |
| July | 70.8 °F | 90.0 °F | 3.78 in. |
| August | 68.4 °F | 89.2 °F | 2.9 in. |
| September | 60.4 °F | 83.0 °F | 3.69 in. |
| October | 48.6 °F | 71.9 °F | 4.13 in. |
| November | 38.4 °F | 58.0 °F | 4.41 in. |
| December | 31.0 °F | 47.1 °F | 4.8 in. |
| Annual | 49.2 °F | 68.8 °F | 51.33 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |