Four Lakes, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 36.1 °F (low) to 57.1 °F (high). Annual precipitation averages 18.6 Inches. 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 | 22.7 °F | 33.7 °F | 2.3 in. |
| February | 24.2 °F | 38.8 °F | 1.57 in. |
| March | 28.9 °F | 47.6 °F | 2.05 in. |
| April | 33.8 °F | 55.9 °F | 1.32 in. |
| May | 41.3 °F | 65.4 °F | 1.62 in. |
| June | 47.3 °F | 72.0 °F | 1.36 in. |
| July | 52.7 °F | 83.0 °F | 0.48 in. |
| August | 52.2 °F | 82.8 °F | 0.46 in. |
| September | 44.3 °F | 73.0 °F | 0.57 in. |
| October | 34.8 °F | 57.6 °F | 1.57 in. |
| November | 28.0 °F | 42.2 °F | 2.35 in. |
| December | 22.5 °F | 33.1 °F | 2.93 in. |
| Annual | 36.1 °F | 57.1 °F | 18.58 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |