Eldorado, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.9 °F (low) to 75.6 °F (high). Annual precipitation averages 26.2 Inches. Eldorado is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.7 °F | 53.8 °F | 1.04 in. |
| February | 30.2 °F | 57.5 °F | 1.1 in. |
| March | 38.6 °F | 66.9 °F | 1.85 in. |
| April | 46.7 °F | 75.4 °F | 2.34 in. |
| May | 57.9 °F | 84.1 °F | 4.05 in. |
| June | 67.7 °F | 92.7 °F | 3.51 in. |
| July | 71.2 °F | 96.8 °F | 2.37 in. |
| August | 70.1 °F | 96.0 °F | 2.48 in. |
| September | 62.3 °F | 88.1 °F | 2.56 in. |
| October | 49.7 °F | 77.2 °F | 2.47 in. |
| November | 37.6 °F | 64.6 °F | 1.3 in. |
| December | 28.4 °F | 54.4 °F | 1.08 in. |
| Annual | 48.9 °F | 75.6 °F | 26.15 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |