Duchesne, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.2 °C (low) to 15.7 °C (high). Annual precipitation averages 231.9 Millimeters. Duchesne 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 | -13.3 °C | -0.3 °C | 13.72 mm |
| February | -9.5 °C | 3.8 °C | 11.43 mm |
| March | -3.8 °C | 11.2 °C | 12.19 mm |
| April | -0.1 °C | 15.8 °C | 18.8 mm |
| May | 4.6 °C | 20.8 °C | 27.18 mm |
| June | 8.8 °C | 27.2 °C | 18.54 mm |
| July | 12.8 °C | 30.9 °C | 20.32 mm |
| August | 11.9 °C | 29.4 °C | 30.73 mm |
| September | 7.1 °C | 24.4 °C | 29.21 mm |
| October | 0.6 °C | 16.7 °C | 25.15 mm |
| November | -5.6 °C | 8.2 °C | 13.21 mm |
| December | -11.7 °C | 0.7 °C | 11.43 mm |
| Annual | 0.2 °C | 15.7 °C | 231.91 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |