Idledale, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.3 °F (low) to 61.3 °F (high). Annual precipitation averages 21.2 Inches. Idledale is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.4 °F | 44.4 °F | 0.83 in. |
| February | 16.3 °F | 44.4 °F | 1.07 in. |
| March | 23.6 °F | 51.7 °F | 2.12 in. |
| April | 29.4 °F | 56.9 °F | 2.93 in. |
| May | 38.0 °F | 65.5 °F | 2.93 in. |
| June | 46.4 °F | 77.4 °F | 1.8 in. |
| July | 52.7 °F | 83.5 °F | 2.12 in. |
| August | 51.1 °F | 81.2 °F | 2.21 in. |
| September | 43.0 °F | 74.0 °F | 1.79 in. |
| October | 32.1 °F | 61.8 °F | 1.45 in. |
| November | 23.0 °F | 51.2 °F | 1.06 in. |
| December | 15.6 °F | 44.1 °F | 0.88 in. |
| Annual | 32.3 °F | 61.3 °F | 21.19 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |