Eureka, Nevada has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32 °F (low) to 59.6 °F (high). Annual precipitation averages 11.7 Inches. Eureka is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.3 °F | 38.5 °F | 1.12 in. |
| February | 18.4 °F | 41.1 °F | 1.29 in. |
| March | 23.6 °F | 48.6 °F | 1.44 in. |
| April | 28.4 °F | 55.0 °F | 1.51 in. |
| May | 35.7 °F | 64.4 °F | 1.2 in. |
| June | 43.8 °F | 76.2 °F | 0.53 in. |
| July | 52.5 °F | 85.2 °F | 0.52 in. |
| August | 50.9 °F | 83.7 °F | 0.65 in. |
| September | 42.8 °F | 74.4 °F | 0.82 in. |
| October | 32.4 °F | 61.3 °F | 0.84 in. |
| November | 23.0 °F | 48.3 °F | 0.8 in. |
| December | 16.3 °F | 38.3 °F | 0.96 in. |
| Annual | 32 °F | 59.6 °F | 11.68 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |