Pitkin, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -7.6 °C (low) to 10.8 °C (high). Annual precipitation averages 504.4 Millimeters. Pitkin is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Aug. 11 - Aug. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.2 °C | -1.9 °C | 43.94 mm |
| February | -17.4 °C | 0.2 °C | 45.72 mm |
| March | -13.3 °C | 5.1 °C | 40.64 mm |
| April | -7.7 °C | 9.4 °C | 38.86 mm |
| May | -3.1 °C | 14.9 °C | 40.39 mm |
| June | 0.3 °C | 21.1 °C | 26.67 mm |
| July | 3.8 °C | 23.5 °C | 53.34 mm |
| August | 3.4 °C | 22.3 °C | 56.13 mm |
| September | -0.6 °C | 18.9 °C | 42.67 mm |
| October | -5.4 °C | 12.3 °C | 30.23 mm |
| November | -12.2 °C | 4.7 °C | 34.8 mm |
| December | -18.4 °C | -1.4 °C | 51.05 mm |
| Annual | -7.6 °C | 10.8 °C | 504.44 mm |
| Average First Frost Date | Aug. 11 - Aug. 20 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |