Carl Junction, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.9 °F (low) to 68.3 °F (high). Annual precipitation averages 46.3 Inches. Carl Junction is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.3 °F | 44.1 °F | 1.89 in. |
| February | 27.8 °F | 49.2 °F | 2.05 in. |
| March | 36.4 °F | 58.8 °F | 3.33 in. |
| April | 45.9 °F | 68.2 °F | 4.99 in. |
| May | 56.2 °F | 76.3 °F | 6.81 in. |
| June | 65.3 °F | 85.2 °F | 5.43 in. |
| July | 69.3 °F | 89.9 °F | 4.14 in. |
| August | 67.4 °F | 89.7 °F | 3.47 in. |
| September | 59.1 °F | 82.0 °F | 4.5 in. |
| October | 47.2 °F | 70.8 °F | 3.85 in. |
| November | 36.4 °F | 58.3 °F | 3.28 in. |
| December | 27.8 °F | 47.3 °F | 2.53 in. |
| Annual | 46.9 °F | 68.3 °F | 46.27 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |