Gleneagle, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.4 °C (low) to 16 °C (high). Annual precipitation averages 474.5 Millimeters. Gleneagle is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.1 °C | 5.8 °C | 12.7 mm |
| February | -8.3 °C | 6.3 °C | 14.99 mm |
| March | -4.9 °C | 10.6 °C | 33.78 mm |
| April | -1.4 °C | 13.7 °C | 60.2 mm |
| May | 3.5 °C | 18.8 °C | 66.55 mm |
| June | 8.6 °C | 25.3 °C | 39.37 mm |
| July | 11.9 °C | 28.3 °C | 64.52 mm |
| August | 11.2 °C | 26.9 °C | 90.17 mm |
| September | 6.7 °C | 23.3 °C | 40.89 mm |
| October | 0.4 °C | 16.6 °C | 22.35 mm |
| November | -5.2 °C | 10.2 °C | 16.76 mm |
| December | -9.1 °C | 5.7 °C | 12.19 mm |
| Annual | 0.4 °C | 16 °C | 474.47 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |