Wolcott, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.8 °C (low) to 14.6 °C (high). Annual precipitation averages 369.3 Millimeters. Wolcott is located in USDA Plant Hardiness Zone 5a. 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 | -14.2 °C | 0.7 °C | 26.16 mm |
| February | -11.1 °C | 3.4 °C | 23.88 mm |
| March | -6.6 °C | 8.8 °C | 26.67 mm |
| April | -2.8 °C | 13.7 °C | 36.32 mm |
| May | 1.1 °C | 19.2 °C | 35.56 mm |
| June | 4.6 °C | 25.7 °C | 28.96 mm |
| July | 8.4 °C | 28.9 °C | 35.81 mm |
| August | 7.3 °C | 27.6 °C | 31.75 mm |
| September | 3 °C | 23.4 °C | 38.35 mm |
| October | -2.7 °C | 15.9 °C | 30.23 mm |
| November | -7.9 °C | 7.5 °C | 28.96 mm |
| December | -13.2 °C | 0.8 °C | 26.67 mm |
| Annual | -2.8 °C | 14.6 °C | 369.32 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |