Warm Beach, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.7 °C (low) to 15 °C (high). Annual precipitation averages 811 Millimeters. Warm Beach is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.7 °C | 7.9 °C | 97.54 mm |
| February | 1.4 °C | 9.1 °C | 74.93 mm |
| March | 2.8 °C | 11.4 °C | 87.88 mm |
| April | 4.6 °C | 14.1 °C | 68.33 mm |
| May | 7.3 °C | 17.6 °C | 56.39 mm |
| June | 9.6 °C | 19.9 °C | 39.62 mm |
| July | 10.9 °C | 22.9 °C | 23.88 mm |
| August | 10.8 °C | 23.4 °C | 24.64 mm |
| September | 8.9 °C | 20.4 °C | 42.16 mm |
| October | 5.9 °C | 14.9 °C | 75.18 mm |
| November | 3.4 °C | 10.5 °C | 119.38 mm |
| December | 1.4 °C | 7.4 °C | 101.09 mm |
| Annual | 5.7 °C | 15 °C | 811.02 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Csb - Warm-Summer Mediterranean Climate |