Antimony, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.6 °C (low) to 17.3 °C (high). Annual precipitation averages 186.4 Millimeters. Antimony 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.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.8 °C | 5.5 °C | 6.35 mm |
| February | -8.8 °C | 7.3 °C | 10.16 mm |
| March | -5.3 °C | 11.9 °C | 12.7 mm |
| April | -2.6 °C | 15.8 °C | 8.64 mm |
| May | 1.3 °C | 20.9 °C | 16.51 mm |
| June | 5.4 °C | 27.1 °C | 11.94 mm |
| July | 9.6 °C | 30.3 °C | 23.62 mm |
| August | 8.6 °C | 29 °C | 32.26 mm |
| September | 3.8 °C | 25.3 °C | 29.97 mm |
| October | -1.6 °C | 18.4 °C | 17.02 mm |
| November | -7.2 °C | 11 °C | 9.4 mm |
| December | -11.2 °C | 5 °C | 7.87 mm |
| Annual | -1.6 °C | 17.3 °C | 186.44 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |