White Center, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6.6 °C (low) to 15.6 °C (high). Annual precipitation averages 1047.2 Millimeters. White Center is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.2 °C | 8 °C | 151.89 mm |
| February | 2.1 °C | 9.3 °C | 105.41 mm |
| March | 3.3 °C | 11.6 °C | 109.47 mm |
| April | 5.1 °C | 14.5 °C | 77.47 mm |
| May | 8.1 °C | 18.3 °C | 49.02 mm |
| June | 10.4 °C | 20.8 °C | 40.13 mm |
| July | 12.4 °C | 24.6 °C | 17.02 mm |
| August | 12.6 °C | 24.8 °C | 24.38 mm |
| September | 10.6 °C | 21.5 °C | 42.42 mm |
| October | 7.1 °C | 15.4 °C | 106.43 mm |
| November | 3.9 °C | 10.4 °C | 155.96 mm |
| December | 1.9 °C | 7.5 °C | 167.64 mm |
| Annual | 6.6 °C | 15.6 °C | 1047.24 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 20-30 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 |