North Powder, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.2 °F (low) to 59.7 °F (high). Annual precipitation averages 13.1 Inches. North Powder is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.7 °F | 36.2 °F | 1.24 in. |
| February | 23.1 °F | 41.8 °F | 0.94 in. |
| March | 27.4 °F | 50.6 °F | 1.27 in. |
| April | 31.2 °F | 57.5 °F | 1.19 in. |
| May | 38.1 °F | 66.3 °F | 1.85 in. |
| June | 43.4 °F | 73.5 °F | 1.3 in. |
| July | 48.5 °F | 85.0 °F | 0.58 in. |
| August | 47.2 °F | 85.6 °F | 0.48 in. |
| September | 40.1 °F | 76.4 °F | 0.51 in. |
| October | 31.9 °F | 61.6 °F | 0.92 in. |
| November | 26.0 °F | 46.0 °F | 1.23 in. |
| December | 20.4 °F | 36.1 °F | 1.6 in. |
| Annual | 33.2 °F | 59.7 °F | 13.11 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |