Eldorado, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.9 °F (low) to 54.9 °F (high). Annual precipitation averages 31.8 Inches. Eldorado is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.2 °F | 25.5 °F | 1.2 in. |
| February | 12.6 °F | 29.1 °F | 1.03 in. |
| March | 23.4 °F | 40.7 °F | 1.66 in. |
| April | 35.3 °F | 54.4 °F | 3.2 in. |
| May | 47.0 °F | 67.0 °F | 3.58 in. |
| June | 57.1 °F | 76.6 °F | 4.73 in. |
| July | 61.3 °F | 80.8 °F | 3.7 in. |
| August | 59.5 °F | 78.9 °F | 3.53 in. |
| September | 51.6 °F | 72.1 °F | 3.03 in. |
| October | 39.7 °F | 58.5 °F | 2.82 in. |
| November | 28.3 °F | 44.0 °F | 1.9 in. |
| December | 17.2 °F | 31.2 °F | 1.39 in. |
| Annual | 36.9 °F | 54.9 °F | 31.77 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |