Emerald Beach, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.6 °F (low) to 69.2 °F (high). Annual precipitation averages 45.7 Inches. Emerald Beach 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.0 °F | 46.1 °F | 2.7 in. |
| February | 27.2 °F | 50.4 °F | 2.36 in. |
| March | 35.1 °F | 59.5 °F | 4.02 in. |
| April | 44.5 °F | 68.9 °F | 4.88 in. |
| May | 54.7 °F | 77.3 °F | 5.35 in. |
| June | 63.7 °F | 85.6 °F | 4.02 in. |
| July | 67.3 °F | 90.4 °F | 4.03 in. |
| August | 65.8 °F | 89.6 °F | 3.12 in. |
| September | 57.4 °F | 82.0 °F | 4.51 in. |
| October | 44.6 °F | 71.4 °F | 3.8 in. |
| November | 35.5 °F | 59.4 °F | 3.85 in. |
| December | 27.6 °F | 49.2 °F | 3.09 in. |
| Annual | 45.6 °F | 69.2 °F | 45.73 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |