Four Lakes, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 2.3 °C (low) to 13.9 °C (high). Annual precipitation averages 471.9 Millimeters. Four Lakes is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 0.9 °C | 58.42 mm |
| February | -4.3 °C | 3.8 °C | 39.88 mm |
| March | -1.7 °C | 8.7 °C | 52.07 mm |
| April | 1 °C | 13.3 °C | 33.53 mm |
| May | 5.2 °C | 18.6 °C | 41.15 mm |
| June | 8.5 °C | 22.2 °C | 34.54 mm |
| July | 11.5 °C | 28.3 °C | 12.19 mm |
| August | 11.2 °C | 28.2 °C | 11.68 mm |
| September | 6.8 °C | 22.8 °C | 14.48 mm |
| October | 1.6 °C | 14.2 °C | 39.88 mm |
| November | -2.2 °C | 5.7 °C | 59.69 mm |
| December | -5.3 °C | 0.6 °C | 74.42 mm |
| Annual | 2.3 °C | 13.9 °C | 471.93 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |