Eaton, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.8 °F (low) to 63.1 °F (high). Annual precipitation averages 13.1 Inches. 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 | 13.3 °F | 40.8 °F | 0.33 in. |
| February | 15.7 °F | 43.2 °F | 0.33 in. |
| March | 24.4 °F | 54.3 °F | 0.85 in. |
| April | 31.9 °F | 60.9 °F | 1.61 in. |
| May | 42.3 °F | 69.7 °F | 2.37 in. |
| June | 51.9 °F | 81.7 °F | 1.63 in. |
| July | 57.0 °F | 87.7 °F | 1.42 in. |
| August | 54.4 °F | 85.4 °F | 1.49 in. |
| September | 45.5 °F | 77.8 °F | 1.12 in. |
| October | 33.2 °F | 64.1 °F | 1.06 in. |
| November | 22.1 °F | 50.7 °F | 0.53 in. |
| December | 13.4 °F | 40.6 °F | 0.36 in. |
| Annual | 33.8 °F | 63.1 °F | 13.1 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |