Sugarloaf, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.4 °C (low) to 13.6 °C (high). Annual precipitation averages 549.1 Millimeters. Sugarloaf 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 Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 3.8 °C | 20.32 mm |
| February | -7.8 °C | 4.2 °C | 27.18 mm |
| March | -4.8 °C | 8.3 °C | 54.61 mm |
| April | -2.2 °C | 11.2 °C | 77.72 mm |
| May | 2.6 °C | 15.9 °C | 76.71 mm |
| June | 7.4 °C | 22.6 °C | 50.29 mm |
| July | 11.1 °C | 26.1 °C | 61.21 mm |
| August | 10.2 °C | 24.8 °C | 51.56 mm |
| September | 6.1 °C | 21 °C | 46.48 mm |
| October | 0.6 °C | 14 °C | 35.31 mm |
| November | -3.9 °C | 7.9 °C | 25.65 mm |
| December | -7.6 °C | 3.7 °C | 22.1 mm |
| Annual | 0.4 °C | 13.6 °C | 549.14 mm |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| 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 | Dfb - Humid Continental Mild Summer, Wet All Year |