Moroni, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.3 °C (low) to 17 °C (high). Annual precipitation averages 246.9 Millimeters. Moroni is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.7 °C | 2.8 °C | 22.86 mm |
| February | -7.8 °C | 5.7 °C | 23.88 mm |
| March | -3.9 °C | 11.6 °C | 21.34 mm |
| April | -1.3 °C | 15.4 °C | 23.11 mm |
| May | 2.7 °C | 20.9 °C | 21.59 mm |
| June | 6.9 °C | 27.6 °C | 14.99 mm |
| July | 11.3 °C | 31.8 °C | 15.75 mm |
| August | 10.4 °C | 30.8 °C | 16 mm |
| September | 5.3 °C | 25.9 °C | 22.86 mm |
| October | -0.6 °C | 18.4 °C | 21.34 mm |
| November | -5.9 °C | 10.3 °C | 19.05 mm |
| December | -10.3 °C | 3 °C | 24.13 mm |
| Annual | -0.3 °C | 17 °C | 246.9 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |