South Willard, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.8 °F (low) to 62.2 °F (high). Annual precipitation averages 19.1 Inches. South Willard is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.3 °F | 35.9 °F | 2.2 in. |
| February | 24.2 °F | 41.3 °F | 1.71 in. |
| March | 32.0 °F | 52.2 °F | 1.94 in. |
| April | 38.0 °F | 59.9 °F | 2.11 in. |
| May | 45.9 °F | 69.8 °F | 2.43 in. |
| June | 53.6 °F | 80.8 °F | 1.19 in. |
| July | 61.9 °F | 90.7 °F | 0.48 in. |
| August | 59.9 °F | 88.9 °F | 0.68 in. |
| September | 50.6 °F | 78.1 °F | 1.37 in. |
| October | 39.6 °F | 63.4 °F | 1.74 in. |
| November | 29.8 °F | 48.3 °F | 1.35 in. |
| December | 21.7 °F | 36.6 °F | 1.89 in. |
| Annual | 39.8 °F | 62.2 °F | 19.09 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |