Ellington, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.4 °F (low) to 68.4 °F (high). Annual precipitation averages 48.2 Inches. Ellington is located in USDA Plant Hardiness Zone 6b. 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 | 22.0 °F | 44.2 °F | 3.06 in. |
| February | 24.8 °F | 49.5 °F | 3.18 in. |
| March | 33.1 °F | 59.4 °F | 4.05 in. |
| April | 42.8 °F | 70.7 °F | 5.91 in. |
| May | 52.7 °F | 77.5 °F | 5.31 in. |
| June | 61.0 °F | 85.3 °F | 4.03 in. |
| July | 65.4 °F | 89.0 °F | 3.77 in. |
| August | 63.6 °F | 88.7 °F | 3.47 in. |
| September | 55.3 °F | 81.6 °F | 3.87 in. |
| October | 42.5 °F | 70.4 °F | 3.43 in. |
| November | 32.6 °F | 57.8 °F | 4.76 in. |
| December | 25.2 °F | 46.9 °F | 3.34 in. |
| Annual | 43.4 °F | 68.4 °F | 48.18 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |