Buckley, Washington has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 41.9 °F (low) to 59.6 °F (high). Annual precipitation averages 48.9 Inches. Buckley is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.9 °F | 45.5 °F | 6.22 in. |
| February | 33.9 °F | 48.2 °F | 4.52 in. |
| March | 35.9 °F | 52.4 °F | 5.23 in. |
| April | 39.1 °F | 57.5 °F | 4.45 in. |
| May | 44.7 °F | 64.6 °F | 3.37 in. |
| June | 48.9 °F | 69.0 °F | 2.87 in. |
| July | 52.6 °F | 75.8 °F | 1.15 in. |
| August | 52.8 °F | 76.9 °F | 1.3 in. |
| September | 48.6 °F | 70.9 °F | 2.03 in. |
| October | 42.4 °F | 59.8 °F | 4.74 in. |
| November | 37.1 °F | 50.1 °F | 7.06 in. |
| December | 33.3 °F | 44.3 °F | 5.98 in. |
| Annual | 41.9 °F | 59.6 °F | 48.92 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |