Eldora, Colorado has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 26 °F (low) to 51.7 °F (high). Annual precipitation averages 26.7 Inches. Eldora 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.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.7 °F | 32.6 °F | 1.78 in. |
| February | 12.5 °F | 34.1 °F | 1.99 in. |
| March | 17.3 °F | 41.6 °F | 2.66 in. |
| April | 22.3 °F | 47.8 °F | 3.65 in. |
| May | 30.5 °F | 56.5 °F | 3.06 in. |
| June | 37.9 °F | 68.4 °F | 1.75 in. |
| July | 44.1 °F | 74.3 °F | 2.6 in. |
| August | 42.3 °F | 72.0 °F | 2.12 in. |
| September | 35.9 °F | 65.6 °F | 1.84 in. |
| October | 27.1 °F | 53.2 °F | 1.71 in. |
| November | 17.9 °F | 41.0 °F | 1.72 in. |
| December | 11.9 °F | 32.8 °F | 1.77 in. |
| Annual | 26 °F | 51.7 °F | 26.65 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |