Burley, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 43.8 °F (low) to 61 °F (high). Annual precipitation averages 51.6 Inches. Burley is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.8 °F | 47.4 °F | 7.84 in. |
| February | 35.5 °F | 49.9 °F | 4.87 in. |
| March | 37.8 °F | 54.1 °F | 5.83 in. |
| April | 41.0 °F | 59.3 °F | 3.97 in. |
| May | 46.5 °F | 66.3 °F | 2.18 in. |
| June | 51.0 °F | 70.6 °F | 1.57 in. |
| July | 54.5 °F | 76.8 °F | 0.69 in. |
| August | 54.5 °F | 77.3 °F | 1.11 in. |
| September | 50.5 °F | 71.6 °F | 1.84 in. |
| October | 44.5 °F | 60.3 °F | 5.08 in. |
| November | 38.9 °F | 51.8 °F | 8.4 in. |
| December | 35.4 °F | 46.4 °F | 8.19 in. |
| Annual | 43.8 °F | 61 °F | 51.57 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |