Airway Heights, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 37 °F (low) to 57.4 °F (high). Annual precipitation averages 17.7 Inches. Airway Heights 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 | 23.3 °F | 33.8 °F | 2.17 in. |
| February | 24.8 °F | 38.9 °F | 1.49 in. |
| March | 29.5 °F | 47.8 °F | 1.94 in. |
| April | 34.6 °F | 56.2 °F | 1.35 in. |
| May | 42.3 °F | 65.8 °F | 1.57 in. |
| June | 48.1 °F | 72.4 °F | 1.34 in. |
| July | 54.1 °F | 83.4 °F | 0.45 in. |
| August | 53.6 °F | 83.3 °F | 0.44 in. |
| September | 45.6 °F | 73.2 °F | 0.55 in. |
| October | 35.9 °F | 57.8 °F | 1.54 in. |
| November | 28.8 °F | 42.4 °F | 2.2 in. |
| December | 23.2 °F | 33.3 °F | 2.63 in. |
| Annual | 37 °F | 57.4 °F | 17.67 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 |