Wellington, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.6 °F (low) to 64.3 °F (high). Annual precipitation averages 42.2 Inches. Wellington is located in USDA Plant Hardiness Zone 6a. 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 | 17.8 °F | 37.4 °F | 1.42 in. |
| February | 22.0 °F | 42.8 °F | 1.82 in. |
| March | 31.5 °F | 53.9 °F | 2.63 in. |
| April | 41.7 °F | 64.9 °F | 4.17 in. |
| May | 52.6 °F | 74.6 °F | 5.6 in. |
| June | 62.6 °F | 83.2 °F | 5.43 in. |
| July | 66.5 °F | 87.2 °F | 4.84 in. |
| August | 63.9 °F | 86.5 °F | 4.34 in. |
| September | 55.2 °F | 78.9 °F | 4.38 in. |
| October | 43.2 °F | 67.5 °F | 3.44 in. |
| November | 32.1 °F | 53.1 °F | 2.39 in. |
| December | 22.6 °F | 41.6 °F | 1.71 in. |
| Annual | 42.6 °F | 64.3 °F | 42.17 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |