Orient, Washington has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.8 °F (low) to 59.5 °F (high). Annual precipitation averages 20.2 Inches. Orient is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.9 °F | 32.9 °F | 2.15 in. |
| February | 24.1 °F | 39.6 °F | 1.37 in. |
| March | 29.2 °F | 50.1 °F | 1.69 in. |
| April | 34.7 °F | 60.9 °F | 1.62 in. |
| May | 42.5 °F | 70.6 °F | 2.11 in. |
| June | 48.5 °F | 76.2 °F | 2.32 in. |
| July | 53.4 °F | 86.2 °F | 1.11 in. |
| August | 52.6 °F | 86.9 °F | 0.71 in. |
| September | 45.2 °F | 76.5 °F | 0.88 in. |
| October | 36.1 °F | 58.5 °F | 1.6 in. |
| November | 29.5 °F | 42.4 °F | 2.07 in. |
| December | 23.2 °F | 33.1 °F | 2.53 in. |
| Annual | 36.8 °F | 59.5 °F | 20.16 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |