Bluff, Utah has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 5.1 °C (low) to 21.9 °C (high). Annual precipitation averages 178.8 Millimeters. Bluff 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 | -6.5 °C | 7.1 °C | 21.08 mm |
| February | -3.7 °C | 11.4 °C | 15.24 mm |
| March | 0.2 °C | 17.5 °C | 13.46 mm |
| April | 4.1 °C | 22.1 °C | 9.14 mm |
| May | 9.2 °C | 27.4 °C | 12.19 mm |
| June | 14.1 °C | 34.1 °C | 5.33 mm |
| July | 18.3 °C | 36.2 °C | 15.24 mm |
| August | 17.6 °C | 34.4 °C | 17.02 mm |
| September | 12.1 °C | 29.8 °C | 22.61 mm |
| October | 4.4 °C | 22.2 °C | 19.56 mm |
| November | -2.4 °C | 13.9 °C | 12.19 mm |
| December | -6.2 °C | 7.2 °C | 15.75 mm |
| Annual | 5.1 °C | 21.9 °C | 178.81 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |