North Omak, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 3 °C (low) to 15.9 °C (high). Annual precipitation averages 336.5 Millimeters. North Omak is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 0.4 °C | 37.34 mm |
| February | -4.6 °C | 4.4 °C | 25.65 mm |
| March | -1.2 °C | 10.9 °C | 29.46 mm |
| April | 2.2 °C | 16.6 °C | 24.38 mm |
| May | 6.4 °C | 21.9 °C | 32.26 mm |
| June | 9.9 °C | 25.7 °C | 31.75 mm |
| July | 13.3 °C | 31.1 °C | 20.83 mm |
| August | 12.9 °C | 30.9 °C | 9.4 mm |
| September | 8.3 °C | 25.3 °C | 11.94 mm |
| October | 2.5 °C | 16.1 °C | 23.62 mm |
| November | -1.9 °C | 6.7 °C | 40.89 mm |
| December | -5.4 °C | 0.7 °C | 49.02 mm |
| Annual | 3 °C | 15.9 °C | 336.54 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |