Burley, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.6 °C (low) to 16.1 °C (high). Annual precipitation averages 1309.9 Millimeters. 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 | 2.1 °C | 8.6 °C | 199.14 mm |
| February | 1.9 °C | 9.9 °C | 123.7 mm |
| March | 3.2 °C | 12.3 °C | 148.08 mm |
| April | 5 °C | 15.2 °C | 100.84 mm |
| May | 8.1 °C | 19.1 °C | 55.37 mm |
| June | 10.6 °C | 21.4 °C | 39.88 mm |
| July | 12.5 °C | 24.9 °C | 17.53 mm |
| August | 12.5 °C | 25.2 °C | 28.19 mm |
| September | 10.3 °C | 22 °C | 46.74 mm |
| October | 6.9 °C | 15.7 °C | 129.03 mm |
| November | 3.8 °C | 11 °C | 213.36 mm |
| December | 1.9 °C | 8 °C | 208.03 mm |
| Annual | 6.6 °C | 16.1 °C | 1309.89 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |