Mancos, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.4 °C (low) to 16.1 °C (high). Annual precipitation averages 423.1 Millimeters. Mancos is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.5 °C | 4.1 °C | 39.88 mm |
| February | -8.4 °C | 5.9 °C | 35.05 mm |
| March | -4.7 °C | 10.7 °C | 34.8 mm |
| April | -1.8 °C | 14.7 °C | 28.19 mm |
| May | 2.2 °C | 20 °C | 28.19 mm |
| June | 6.5 °C | 26.2 °C | 14.22 mm |
| July | 10.8 °C | 28.8 °C | 40.13 mm |
| August | 10.3 °C | 27.5 °C | 50.29 mm |
| September | 6 °C | 23.7 °C | 51.05 mm |
| October | 0 °C | 17.1 °C | 34.29 mm |
| November | -5.4 °C | 10.3 °C | 32.51 mm |
| December | -9.8 °C | 4.3 °C | 34.54 mm |
| Annual | -0.4 °C | 16.1 °C | 423.14 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |