Sugar City, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.4 °C (low) to 21 °C (high). Annual precipitation averages 291.9 Millimeters. Sugar City is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | 8.3 °C | 5.59 mm |
| February | -7.9 °C | 10.2 °C | 5.84 mm |
| March | -3.4 °C | 15.9 °C | 16.51 mm |
| April | 1.3 °C | 20 °C | 30.48 mm |
| May | 7.3 °C | 25.4 °C | 41.15 mm |
| June | 13.1 °C | 31.6 °C | 37.08 mm |
| July | 15.9 °C | 34.4 °C | 58.17 mm |
| August | 14.9 °C | 32.9 °C | 46.99 mm |
| September | 9.7 °C | 29.1 °C | 17.02 mm |
| October | 1.9 °C | 21.7 °C | 18.29 mm |
| November | -4.8 °C | 14.1 °C | 8.38 mm |
| December | -9.6 °C | 8.3 °C | 6.35 mm |
| Annual | 2.4 °C | 21 °C | 291.85 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 |