Wellington, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.3 °F (low) to 64 °F (high). Annual precipitation averages 9 Inches. Wellington is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.9 °F | 37.0 °F | 0.67 in. |
| February | 18.4 °F | 43.4 °F | 0.6 in. |
| March | 26.1 °F | 54.6 °F | 0.64 in. |
| April | 32.1 °F | 62.9 °F | 0.61 in. |
| May | 40.4 °F | 72.7 °F | 0.85 in. |
| June | 51.2 °F | 84.4 °F | 0.57 in. |
| July | 58.1 °F | 91.0 °F | 0.69 in. |
| August | 54.2 °F | 88.4 °F | 1.01 in. |
| September | 48.8 °F | 79.6 °F | 1.26 in. |
| October | 33.9 °F | 65.5 °F | 1.0 in. |
| November | 22.3 °F | 50.5 °F | 0.52 in. |
| December | 13.6 °F | 37.5 °F | 0.58 in. |
| Annual | 34.3 °F | 64 °F | 9 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |