Minturn, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -4.4 °C (low) to 12.2 °C (high). Annual precipitation averages 518.9 Millimeters. Minturn is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.8 °C | -0.4 °C | 45.97 mm |
| February | -13.1 °C | 1.6 °C | 38.35 mm |
| March | -8.9 °C | 6.4 °C | 42.16 mm |
| April | -4.7 °C | 10.7 °C | 58.42 mm |
| May | -0.6 °C | 16.2 °C | 39.37 mm |
| June | 2.8 °C | 22.8 °C | 31.24 mm |
| July | 6.4 °C | 26 °C | 39.62 mm |
| August | 5.5 °C | 24.7 °C | 44.7 mm |
| September | 1.6 °C | 20.6 °C | 52.07 mm |
| October | -3.7 °C | 13.2 °C | 44.96 mm |
| November | -9.2 °C | 5.5 °C | 43.18 mm |
| December | -14.1 °C | -0.4 °C | 38.86 mm |
| Annual | -4.4 °C | 12.2 °C | 518.9 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |