Nezperce, Idaho has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 2 °C (low) to 14.2 °C (high). Annual precipitation averages 516.9 Millimeters. Nezperce is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.8 °C | 2.6 °C | 42.16 mm |
| February | -4.2 °C | 5 °C | 38.35 mm |
| March | -1.8 °C | 8.9 °C | 50.55 mm |
| April | 0.8 °C | 13 °C | 57.15 mm |
| May | 4.4 °C | 17.7 °C | 70.36 mm |
| June | 7.4 °C | 21.3 °C | 53.85 mm |
| July | 10.5 °C | 27.7 °C | 20.83 mm |
| August | 10.4 °C | 28.4 °C | 20.57 mm |
| September | 6.6 °C | 22.8 °C | 26.16 mm |
| October | 1.8 °C | 14.7 °C | 43.18 mm |
| November | -2.2 °C | 6.5 °C | 50.29 mm |
| December | -5.4 °C | 1.9 °C | 43.43 mm |
| Annual | 2 °C | 14.2 °C | 516.88 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 125-150 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 | Moderate Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |