Eagle, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -2.4 °C (low) to 15 °C (high). Annual precipitation averages 329.7 Millimeters. Eagle is located in USDA Plant Hardiness Zone 5b. 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 | -13.7 °C | 1.1 °C | 22.61 mm |
| February | -10.2 °C | 3.8 °C | 25.15 mm |
| March | -5.6 °C | 9.5 °C | 26.67 mm |
| April | -2.3 °C | 14 °C | 32 mm |
| May | 1.2 °C | 19.7 °C | 29.97 mm |
| June | 5.1 °C | 26.1 °C | 18.29 mm |
| July | 8.9 °C | 29.1 °C | 38.1 mm |
| August | 7.8 °C | 27.7 °C | 26.16 mm |
| September | 3.3 °C | 23.8 °C | 35.31 mm |
| October | -2.1 °C | 16.4 °C | 29.46 mm |
| November | -7.8 °C | 7.7 °C | 24.89 mm |
| December | -13 °C | 0.8 °C | 21.08 mm |
| Annual | -2.4 °C | 15 °C | 329.69 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |