Malo, Washington has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.6 °F (low) to 57.2 °F (high). Annual precipitation averages 17.9 Inches. Malo is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.8 °F | 30.6 °F | 1.8 in. |
| February | 20.4 °F | 37.8 °F | 1.42 in. |
| March | 25.6 °F | 48.3 °F | 1.39 in. |
| April | 30.6 °F | 58.4 °F | 1.36 in. |
| May | 38.9 °F | 68.4 °F | 2.24 in. |
| June | 44.8 °F | 73.7 °F | 2.24 in. |
| July | 48.5 °F | 83.6 °F | 1.01 in. |
| August | 47.6 °F | 83.9 °F | 0.64 in. |
| September | 40.8 °F | 74.1 °F | 0.86 in. |
| October | 32.0 °F | 56.8 °F | 1.09 in. |
| November | 24.8 °F | 40.0 °F | 1.77 in. |
| December | 18.8 °F | 30.8 °F | 2.05 in. |
| Annual | 32.6 °F | 57.2 °F | 17.87 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |