Pitkin, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 18.4 °F (low) to 51.4 °F (high). Annual precipitation averages 19.9 Inches. 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 | -4.4 °F | 28.6 °F | 1.73 in. |
| February | 0.6 °F | 32.3 °F | 1.8 in. |
| March | 8.1 °F | 41.1 °F | 1.6 in. |
| April | 18.2 °F | 49.0 °F | 1.53 in. |
| May | 26.5 °F | 58.8 °F | 1.59 in. |
| June | 32.6 °F | 70.0 °F | 1.05 in. |
| July | 38.9 °F | 74.3 °F | 2.1 in. |
| August | 38.1 °F | 72.1 °F | 2.21 in. |
| September | 31.0 °F | 66.0 °F | 1.68 in. |
| October | 22.3 °F | 54.2 °F | 1.19 in. |
| November | 10.1 °F | 40.4 °F | 1.37 in. |
| December | -1.1 °F | 29.4 °F | 2.01 in. |
| Annual | 18.4 °F | 51.4 °F | 19.86 in. |
| 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 : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |