Buckley, Washington has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 5.5 °C (low) to 15.3 °C (high). Annual precipitation averages 1242.6 Millimeters. 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 | 1.1 °C | 7.5 °C | 157.99 mm |
| February | 1.1 °C | 9 °C | 114.81 mm |
| March | 2.2 °C | 11.3 °C | 132.84 mm |
| April | 3.9 °C | 14.2 °C | 113.03 mm |
| May | 7.1 °C | 18.1 °C | 85.6 mm |
| June | 9.4 °C | 20.6 °C | 72.9 mm |
| July | 11.4 °C | 24.3 °C | 29.21 mm |
| August | 11.6 °C | 24.9 °C | 33.02 mm |
| September | 9.2 °C | 21.6 °C | 51.56 mm |
| October | 5.8 °C | 15.4 °C | 120.4 mm |
| November | 2.8 °C | 10.1 °C | 179.32 mm |
| December | 0.7 °C | 6.8 °C | 151.89 mm |
| Annual | 5.5 °C | 15.3 °C | 1242.57 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |