Nezperce, Idaho has a Humid Continental Climate - Dry Warm Summer climate (Köppen classification: Dsa). Average annual temperatures range from 35.5 °F (low) to 57.6 °F (high). Annual precipitation averages 20.4 Inches. 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 | 23.3 °F | 36.6 °F | 1.66 in. |
| February | 24.5 °F | 41.0 °F | 1.51 in. |
| March | 28.7 °F | 48.1 °F | 1.99 in. |
| April | 33.5 °F | 55.4 °F | 2.25 in. |
| May | 40.0 °F | 63.8 °F | 2.77 in. |
| June | 45.3 °F | 70.4 °F | 2.12 in. |
| July | 50.9 °F | 81.8 °F | 0.82 in. |
| August | 50.7 °F | 83.2 °F | 0.81 in. |
| September | 43.8 °F | 73.1 °F | 1.03 in. |
| October | 35.3 °F | 58.4 °F | 1.7 in. |
| November | 28.0 °F | 43.7 °F | 1.98 in. |
| December | 22.2 °F | 35.4 °F | 1.71 in. |
| Annual | 35.5 °F | 57.6 °F | 20.35 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsa - Humid Continental Climate - Dry Warm Summer |