Eaton, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1 °C (low) to 17.3 °C (high). Annual precipitation averages 332.7 Millimeters. Eaton 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 | -10.4 °C | 4.9 °C | 8.38 mm |
| February | -9.1 °C | 6.2 °C | 8.38 mm |
| March | -4.2 °C | 12.4 °C | 21.59 mm |
| April | -0.1 °C | 16.1 °C | 40.89 mm |
| May | 5.7 °C | 20.9 °C | 60.2 mm |
| June | 11.1 °C | 27.6 °C | 41.4 mm |
| July | 13.9 °C | 30.9 °C | 36.07 mm |
| August | 12.4 °C | 29.7 °C | 37.85 mm |
| September | 7.5 °C | 25.4 °C | 28.45 mm |
| October | 0.7 °C | 17.8 °C | 26.92 mm |
| November | -5.5 °C | 10.4 °C | 13.46 mm |
| December | -10.3 °C | 4.8 °C | 9.14 mm |
| Annual | 1 °C | 17.3 °C | 332.73 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |