Kersey, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.8 °C (low) to 17.7 °C (high). Annual precipitation averages 339.1 Millimeters. Kersey is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.2 °C | 4.7 °C | 9.4 mm |
| February | -9.5 °C | 6.4 °C | 8.13 mm |
| March | -4.4 °C | 12.8 °C | 20.32 mm |
| April | -0.2 °C | 16.5 °C | 39.37 mm |
| May | 5.9 °C | 21.6 °C | 65.79 mm |
| June | 11.2 °C | 28.3 °C | 39.12 mm |
| July | 14 °C | 31.6 °C | 36.83 mm |
| August | 12.5 °C | 30.4 °C | 38.86 mm |
| September | 7.5 °C | 26.2 °C | 31.75 mm |
| October | 0.3 °C | 18.5 °C | 26.42 mm |
| November | -5.9 °C | 10.8 °C | 13.46 mm |
| December | -11.1 °C | 4.7 °C | 9.65 mm |
| Annual | 0.8 °C | 17.7 °C | 339.1 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |