Bonanza, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.7 °C (low) to 16.9 °C (high). Annual precipitation averages 231.7 Millimeters. Bonanza is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.1 °C | -0.7 °C | 13.97 mm |
| February | -8.7 °C | 3.9 °C | 10.41 mm |
| March | -2.7 °C | 11.8 °C | 16.51 mm |
| April | 1.3 °C | 16.9 °C | 22.61 mm |
| May | 6.2 °C | 22.7 °C | 30.48 mm |
| June | 11 °C | 29.3 °C | 15.24 mm |
| July | 14.9 °C | 33.2 °C | 17.53 mm |
| August | 13.9 °C | 31.5 °C | 20.57 mm |
| September | 8.9 °C | 26.5 °C | 32 mm |
| October | 2.4 °C | 18.2 °C | 27.43 mm |
| November | -4.2 °C | 8.7 °C | 13.72 mm |
| December | -10.3 °C | 0.8 °C | 11.18 mm |
| Annual | 1.7 °C | 16.9 °C | 231.65 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |