Eureka, Nevada has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Annual precipitation averages 296.7 Millimeters. 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 | -8.7 °C | 3.6 °C | 28.45 mm |
| February | -7.6 °C | 5.1 °C | 32.77 mm |
| March | -4.7 °C | 9.2 °C | 36.58 mm |
| April | -2 °C | 12.8 °C | 38.35 mm |
| May | 2.1 °C | 18 °C | 30.48 mm |
| June | 6.6 °C | 24.6 °C | 13.46 mm |
| July | 11.4 °C | 29.6 °C | 13.21 mm |
| August | 10.5 °C | 28.7 °C | 16.51 mm |
| September | 6 °C | 23.6 °C | 20.83 mm |
| October | 0.2 °C | 16.3 °C | 21.34 mm |
| November | -5 °C | 9.1 °C | 20.32 mm |
| December | -8.7 °C | 3.5 °C | 24.38 mm |
| Annual | 0 °C | 15.3 °C | 296.68 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |