Caruthersville, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50 °F (low) to 69.5 °F (high). Annual precipitation averages 51.2 Inches. Caruthersville 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 | 28.6 °F | 45.2 °F | 3.74 in. |
| February | 31.7 °F | 50.1 °F | 4.28 in. |
| March | 39.7 °F | 59.5 °F | 4.99 in. |
| April | 49.4 °F | 70.5 °F | 5.49 in. |
| May | 59.8 °F | 79.2 °F | 5.58 in. |
| June | 67.9 °F | 87.1 °F | 3.82 in. |
| July | 71.2 °F | 89.7 °F | 3.86 in. |
| August | 69.0 °F | 88.7 °F | 2.87 in. |
| September | 61.4 °F | 83.0 °F | 3.24 in. |
| October | 49.7 °F | 72.6 °F | 4.29 in. |
| November | 39.4 °F | 59.3 °F | 4.32 in. |
| December | 32.1 °F | 48.5 °F | 4.72 in. |
| Annual | 50 °F | 69.5 °F | 51.2 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |